What is Silicon Nitride?

Silicon nitride is an inorganic substance with the chemical formula Si3N4. It is an important structural ceramic material with high hardness, lubricity, wear resistance, atomic crystal, and oxidation resistance at high temperature. Moreover, it can also resist the shock of cold and heat. It can be heated to more than 1000 ℃ in the air, and it will not be broken when it is rapidly cooled and then heated again. It is precisely because of the excellent properties of silicon nitride ceramics that people often use it to manufacture mechanical components such as bearings, gas turbine blades, mechanical seal rings, and permanent molds. If the heat-receiving surface of engine components is made of silicon nitride ceramics that are resistant to high temperature and difficult to transfer heat, it can not only improve the quality of diesel engines, save fuel, but also improve thermal efficiency.

What is Silicon Nitride Used for?

Silicon nitride is used as high-grade refractory material, such as SI3N4-SIC refractory combined with sic for blast furnace shaft and other parts; such as combined with BN as SI3N4-BN material, used for horizontal continuous casting separation ring. SI3N4-BN series horizontal continuous casting separation ring is a fine-structure ceramic material with uniform structure and high mechanical strength. It has good thermal shock resistance and will not be wetted by molten steel, which meets the technological requirements of continuous casting.

Silicon nitride ceramic materials have high thermal stability, strong oxidation resistance and high dimensional accuracy of products. Since silicon nitride is a covalent compound with high bond strength and can form an oxide protective film in the air, it also has good chemical stability. It is oxidized, and is not infiltrated or corroded by many molten metals or alloys such as aluminum, lead, tin, silver, brass, nickel, etc., but can be corroded by molten liquids such as magnesium, nickel-chromium alloy, and stainless steel.

Silicon nitride ceramic materials can be used for high-temperature engineering components, advanced refractory materials in metallurgical industry, corrosion-resistant components and sealing components in chemical industry, and cutting tools and cutting tools in machining industry.

Since silicon nitride can form a strong bond with silicon carbide, aluminum oxide, thorium dioxide, boron nitride, etc., it can be used as a bonding material for modification with different ratios.

In addition, silicon nitride can also be used in solar cells. After the silicon nitride film is coated by the PECVD method, it can not only be used as an anti-reflection film to reduce the reflection of incident light, but also, during the deposition process of the silicon nitride film, the hydrogen atoms of the reaction product enter the silicon nitride film and the silicon wafer. Played the role of passivation defects. The atomic ratio of silicon nitride to silicon nitride here is not strictly 4:3, but fluctuates within a certain range according to different process conditions, and the physical properties of the film corresponding to different atomic ratios are different.

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Boron nitride is a crystal composed of nitrogen atoms and boron atoms, with a chemical composition of 43.6% boron and 56.4% nitrogen.

It has four different variants:

hexagonal boron nitride (HBN),

rhombohedral boron nitride (RBN),

cubic boron nitride (CBN),

wurtzite boron nitride (WBN).

How Do You Make a Hexagonal Boron Nitride?

Hexagonal boron nitride is obtained by the reaction of boron trioxide (B2O3) or boric acid (H3BO3) with ammonia (NH3) or urea (CO (NH2) 2) in nitrogen atmosphere:

B2O3 + 2NH3 2BN + 3H2O (T = 900C).

B (OH) 3 + NH3 BN + 3H2O (T = 900C).

B2O3 + CO (NH2) 2 "2BN + CO2 + 2H2O (T > 1000 °C).

B2O3 + 3CaB6 + 10N2 20BN + 3CaO (T > 1500 °C).

The resulting disordered (amorphous) boron nitride contains 92-95% BN and 5-8% B2O3. The remaining B2O3 can be evaporated at a temperature of > 1500 °C in the second step to achieve a BN concentration of > 98%. This kind of annealing also makes BN crystallize, and the size of microcrystals increases with the increase of annealing temperature.

What is Wurtzite Boron Nitride Used For?

Wurtzite boron nitride has two different particle shapes: plate crystal type and regular crystal type.

Using wurtzite boron nitride with flake particles as raw material, coarse-grained polycrystalline powder was sintered, which was used to make traditional cutting tools and grinding tools. The cutting teeth made of wurtzite boron nitride material have excellent impact resistance, which is better than that of conventional polycrystal CBN.

Wurtzite boron nitride with regular crystal shape particles is an ideal material for steel polishing, such as moulds, moulds and so on.

Why is Hexagonal Boron Nitride an Insulator?

Hexagonal boron nitride has good electrical insulation, thermal conductivity, chemical corrosion resistance and lubricity, and has a strong neutron absorption capacity, which is relatively stable for almost all organic solvents and corrosive chemicals. It is chemically inert to almost all molten metals. Below 1000 ℃ in the air, all kinds of physical and chemical properties remain basically unchanged. The temperature used in nitrogen or argon is still stable at 3000 ℃.

How Hard is Wurtzite Boron Nitride?

A certain amount of information has been reported about cBN, especially its hardness, about 45-50GPa. However, almost nothing is known about the mechanical properties of wBN.

WBN is also a kind of superhard material whose hardness is close to diamond, and its hardness varies greatly from 24GPa to 54GPa. However, wurtzite boron nitride is a high-pressure metastable phase, which can be easily converted to hexagonal boron nitride (with a structure similar to graphite) at atmospheric pressure, and micron wurtzite boron nitride can only be prepared by shock wave compression. It is important to know that wurtzite boron nitride can be converted into cubic boron nitride under the conditions of ultra-high temperature and high pressure exceeding 6gpa and 1400 °C.

How Much does Boron Nitride Cost?

The price is influenced by many factors including the supply and demand in the market, industry trends, economic activity, market sentiment, and unexpected events.

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Supplier of Hexagonal Boron Nitride h-BN Powder

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In addition to reducing friction, the lubricant can also reduce wear during operation, reduce the operating temperature, minimize corrosion on the metal surface and help to remove contaminants from the system. 

The general lubricating oil has been unable to meet the lubrication requirements of the equipment. In this case, solid lubricants with better performance emerge as the times require. 

There are many kinds of solid lubricants, such as graphite, molybdenum disulfide, graphite fluoride, tungsten disulfide, boron nitride and so on. Molybdenum disulfide is the most widely used, and boron nitride and graphite fluoride have the best performance.

What is Molybdenum Disulfide MoS2?

Molybdenum disulfide is a solid powder made from natural molybdenum concentrate powder, which is the modern "king of advanced solid lubrication". It is lead gray to black solid powder, greasy in contact, odorless, and belongs to hexagonal or rhombohedral system. Similar to graphite, with metallic luster. 

It has the advantages of high temperature resistance, radiation resistance, high vacuum resistance, corrosion resistance and extreme pressure resistance, so it has been widely used as an additive in grease, powder metallurgy, modified plastics, spraying and other industries. 

What is Molybdenum Disulfide MoS2 Used For?

Can be used as friction improver (friction reducer), antiwear agent, extreme pressure agent and antioxidant. It is widely used in aviation industry (vacuum anti-radiation lubrication), automobile industry (fixture and parts), anti-bite industry (mechanical industry) (general lubrication), mining industry, military industry, shipbuilding industry, heavy industry, bearing industry, gear industry and assembly industry, etc. it is also used as additives for various lubricants, manufacturing molybdenum compounds, catalytic hydrogenation desulfurization catalysts, gas storage materials, photocell materials and so on. 

Almost all markets using greases and almost all types of grease thickeners use molybdenum disulfide, including lithium complexes, aluminum complexes and polyureas. It is also considered to be the best additive for composite titanium-based grease with its inherent high load-carrying capacity and even better performance. 

In general, grease contains 1 to 2% MoS2, and the key parameters are surface roughness, load carrying and speed. For rougher metal surfaces, larger MoS2 particle sizes are ideal because they fill deep valleys and help to form a smooth surface. At a given MoS2 concentration, small and medium-sized particles will provide better load-bearing capacity. At the same time, due to the high acid value, very small particles may cause some corrosion problems. Generally speaking, the medium particle size of about 6m is the most commonly used MoS2 particle size in grease. 

At present, molybdenum disulfide has become an indispensable and irreplaceable industrial additive product.

MoS2 Powder Supplier

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Aerogel is a general term for a class of nanoporous materials, usually derived from wet gel, who has a three-dimensional network structure composed of nanoparticles, which is filled with gas dispersion medium. Its special nanoporous structure gives it unique thermal, optical, acoustic and electrical properties. It has set 15 Guinness World records and was hailed by science magazine as a "magical material that changes the world".

There are many kinds of aerogel, including silicon system, carbon system, sulfur system, metal oxide system, metal system, etc.

Among them, silica aerogel is the most widely used and industrialized one of the most mature aerogel, which is also called "frozen smoke" or "blue smoke" and is the lightest solid material in the world. It is a kind of high temperature resistant aerogel which has been studied most in the field of heat insulation.

Silica aerogel materials are usually composite with infrared sunscreens and intensifiers to improve the thermal insulation and optical properties of silica aerogel, so that it has practical value of nanoporous super insulation material.

Mainly used in aerospace, military, electronics, new energy vehicles, construction, household appliances, industrial equipment, oil pipelines and other fields of heat insulation, energy conservation and emission reduction.

Silica SiO2 Aerogel Properties

Thermal insulation:

Silica aerogel material has very low thermal conductivity, which can reach 0.013-0.016W/(m·K), lower than static air (0.024W/(m·K)) thermal conductivity, 2-3 orders of magnitude lower than the corresponding inorganic insulation material.

Even at 800℃, its thermal conductivity is 0.043W/(m·K). No decomposition under high temperature, no harmful gas release, belongs to the green environmental protection material. Silica aerogel can be made into various thermal insulation materials after compounding with various heat-resistant fibers. It can be widely used in industry, construction, pipeline, automobile, aerospace and other fields.

Sound insulation:

Silica aerogel is also an ideal acoustic delay or high-temperature acoustic insulation material due to its low sound velocity properties. The material has a wide acoustic impedance variable range (103-107 kg/m2·s), which makes it an ideal acoustic impedance coupling material for ultrasonic detectors. Preliminary experimental results show that a silicon aerogel with a density of about 300 kg/m3 as the coupling material can increase the sound intensity by 30dB, and a higher sound intensity gain can be expected if a silicon aerogel with a density gradient is used.

Nonlinear optical properties:

Due to the formation of quantum dot structure in the nanoparticle network of silica aerogel, the results of mixing Si by chemical gas osmosis method and C60 by solution method show that the dopant exists in the form of nano grain, and the strong visible light emission is observed, which provides strong evidence for the quantum confinement effect of porous silicon luminescence. Based on the structure of silica aerogel and the nonlinear optical effect of C60, a new type of laser protective lens can be further developed.

Filtration and catalytic properties:

Nano-structured aerogel can also be used as a new type of gas filtration material. Different from other materials, this material is a highly efficient gas filtration material with uniform pore size distribution and high porosity. Because the material is particularly large than the surface product. Aerogel also has a broad application prospect as a new catalyst or catalyst carrier.

Refractive index tunability:

The refractive index of silica aerogel is close to L, and the ratio of the annihilation coefficient of infrared and visible light is more than 100, which can effectively pass through the visible part of sunlight and block the infrared part, becoming an ideal transparent insulation material, which has been applied in the utilization of solar energy and building energy saving.

Silica SiO2 Aerogel Supplier

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What is Inconel 718 materials?

Inconel 718 alloys is a precipitation-hardening nickel-iron-based superalloy containing niobium and molybdenum. Its microstructure is austenite and has excellent comprehensive properties. It is one of the most widely used superalloys. The alloy has good comprehensive properties in the temperature range of -253 to 700 °C, the yield strength below 650 °C ranks first in the deformed superalloy, and has good fatigue resistance, radiation resistance, oxidation resistance, corrosion resistance, and good performance. Good processing performance and welding performance. It can manufacture various parts with complex shapes, and has been widely used in the above temperature range in aerospace, nuclear energy, petroleum industry and extrusion dies.

Why is Inconel 718 not easy to machine?

The reason behind this is that Inconel 718 has lower thermal conductivity and higher tensile strength among all three materials. No heat dissipation occurs in the shear zone, which reduces tool wear compared to the other two materials.

Fields of application for Inconel 718

Inconel718 nickel-based superalloy material has been used to make aero-engine turbine disks, rings, elastic elements, sealing elements and welded structural parts; make liquid hydrogen, liquid oxygen rocket engines in turbine rotors and other components; make nuclear energy industrial applications. Various elastic elements and lattices; manufactures a wide range of parts for applications in the petroleum and chemical industries.

Aerospace engineering, rocket engines, thrust reversers, ships, chemical processing units, pressure vessels, pollution control systems and nuclear power production reactions, cryogenic storage vessels, high-strength bolts and hot extrusion tools, turbine engines, fasteners, fuel and exhaust system.

Inconel grades are suitable for use in the production of parts used in harsh environments, such as turbocharger rotors and seals, motor shafts for submersible electric pumps, steam generators, heat exchanger tubes, firearm silencer blast plates and machine guns, on aircraft Black box recorders, etc.

About RBOSCHCO

RBOSCHCO is a trusted global chemical material supplier & manufacturer with over 12 years experience in providing super high-quality chemicals and Nanomaterials. The company export to many countries, such as USA, Canada, Europe, UAE, South Africa, Tanzania,Kenya,Egypt,Nigeria,Cameroon,Uganda,Turkey,Mexico,Azerbaijan,Belgium,Cyprus,Czech Republic, Brazil, Chile, Argentina, Dubai, Japan, Korea, Vietnam, Thailand, Malaysia, Indonesia, Australia,Germany, France, Italy, Portugal etc. As a leading nanotechnology development manufacturer, RBOSCHCO dominates the market. Our professional work team provides perfect solutions to help improve the efficiency of various industries, create value, and easily cope with various challenges. If you are looking for inconel 718 powder, please send an email to: sales1@rboschco.com

What is Boron Carbide B4C?

Boron carbide, also known as black diamond, is an inorganic substance with the chemical formula B4C. Hard black lustrous crystal.

It has a Mohs hardness of about 9.5, making it one of the three hardest materials known (after diamond and cubic boron nitride). Less fragile than most pottery. Used in tank armor, bullet-proof vests and many industrial applications. Relative density (D204)2.508 to 2.512. Melting point is 2350 ℃. The boiling point of 3500 ℃.

Boron carbide does not react with acid and alkali solution, has high chemical potential, does not react with acid and alkali solution, has high chemical potential, neutron absorption, wear resistance and semiconductor conductivity. It is one of the most stable to acids and is stable in all concentrated or dilute acid or alkaline solutions. Boron carbide is basically stable under 800℃ in the air environment, due to the higher temperature of the oxidation of boron oxide in the gas phase loss, resulting in its instability, oxidation to form carbon dioxide and boron trioxide.

It was discovered in the 19th century as a by-product of research on metal borides and was not studied scientifically until the 1930s. Boron carbide can be prepared by reducing boron trioxide with carbon in an electric furnace.

Because of its low density, high strength, high temperature stability and good chemical stability. In wear resistant materials, ceramic reinforcement, especially in light armor, reactor neutron absorbent applications. In addition, compared with diamond and cubic boron nitride, boron carbide is easy to manufacture, low cost, so it is more widely used, in some places can replace the expensive diamond, common in grinding, grinding, drilling and other applications.

What is Boron Carbide B4C Used For?

Controlled nuclear fission

Boron carbide can absorb large amounts of neutrons without forming any radioactive isotopes, making it an ideal neutron absorber for nuclear power plants, where neutron absorbers control the rate of nuclear fission. Boron carbide is mainly used in nuclear reactors as a controllable rod, but is sometimes made into a powder to increase surface area.

At the Chernobyl nuclear accident in 1986, Russia finally stopped the chain reaction in the reactor after dropping nearly 2,000 tons of boron carbide and sand.

Abrasive materials

Boron carbide has been used as a coarse abrasive material for a long time. Because of its high melting point, it is not easy to cast into artifacts, but by melting the powder at high temperatures, it can be machined into simple shapes. Used for grinding, grinding, drilling and polishing of hard materials such as hard alloy and precious stone.

Coating paint

Boron carbide can also be used as a ceramic coating for warships and helicopters. It is lightweight and has the ability to resist armor-piercing bullets penetrating the hot-pressed coating as a whole.

Nozzle

It is used in the arms industry to make gun nozzles. Boron carbide, extremely hard and wear-resistant, does not react with acid and alkali, high/low temperature resistance, high pressure resistance, density ≥2.46g/cm3; Microhardness ≥ 3500kGF /mm2, bending strength ≥400MPa, melting point is 2450℃.

Because boron carbide nozzle has the characteristics of wear resistance and high hardness, boron carbide sandblasting nozzle will gradually replace the known carbide/tungsten steel and silicon carbide, silicon nitride, alumina, zirconia and other materials of the sandblasting nozzle.

Others

Boron carbide is also used in the manufacture of metal borides and smelting of sodium boron, boron alloys and special welding.

Boron Carbide B4C Powder Supplier

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As a leading nanotechnology development manufacturer, RBOSCHCO dominates the market. Our professional work team provides perfect solutions to help improve the efficiency of various industries, create value, and easily cope with various challenges.

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What is Tungsten Carbide WC? 

Tungsten carbide is a substance made of metal tungsten bonded to carbon atoms. It's a compound called WC, which is basically a gray powder. The gray powder can then be sintered to form the desired product. It is a strong material that is often used in industry, but its applications are endless. In fact, tungsten carbide is so hard that only diamond tools can cut it. Tungsten carbide is particularly durable, more durable than other metal counterparts such as gold, silver, or platinum. 

What are the Properties of Tungsten Carbide? 

Tungsten carbide has very unique properties. High strength, high density and high hardness are the distinguishing characteristics of tungsten carbide, making it a versatile material with a variety of uses. Tungsten carbide can withstand extremely high temperatures, making it an excellent material for machining and cutting tools, even furnaces, and can conduct electricity, and vice versa. Abrasion and corrosion resistance are among the other properties of tungsten carbide, demonstrating its versatility and uniqueness.

Industrial Application of Tungsten Carbide 

Tungsten carbide's unique properties and superior quality make it a popular material for many different applications. The range of applications and value of tungsten is not limited to manufacturing and industrial fields, but also plays an important role in the medical field, fashion industry, and many other fields. 

Construction

Buildings need to use tools of high strength and toughness so that they can withstand the materials used to form most structures. Materials such as cement and asphalt are difficult to penetrate and require exceptionally durable and strong blades or drills, such as those made of tungsten carbide. Tungsten carbide is commonly used in building materials such as saws and drill bits because it is almost unbreakable.

Industrial alloy 

To make electronics, construction projects, industrial gears, and even aviation equipment, alloys are made by mixing metals with other metals or elements. These alloys have specific properties, such as strength or heat resistance, which are necessary for each product and its use. Alloys made from tungsten carbide are a particularly popular choice for building materials and tools. About 17% of tungsten carbide is used to make these alloys. 

Milling industry 

Due to its durability and robustness, approximately 10% of all WC usage comes from the milling industry. Tungsten carbide is commonly used in milling blades and end mills and can be easily molded while remaining tough. The milling industry needs materials such as tungsten carbide because it is a precision dependent industry; The products created may need to be pulverized, ground or ground, and the versatility of tungsten carbide can be used to make extremely precise milling tools.

Jewelry 

Another refreshing new use for tungsten carbide is in the jewellery industry. Tungsten carbide, if cut, crafted and polished properly, can look just as stunning as any other piece of jewelry you normally wear. In addition to being known for its incredible and above average scratch resistance, tungsten carbide is also an affordable alternative to the gold and silver jewelry we used to buy. The metal has taken the industry by storm because of its durability and is already widely used in earrings, necklaces and rings. 

Production of surgical tools 

Many possible uses of tungsten carbide are still being discovered, and among these new applications, its use in the medical field. Tungsten carbide is commonly used to make surgical instruments because it improves their performance and is resistant to corrosion.  It increases the life and strength of surgical tools. The properties of tungsten carbide, such as its ability to sharpen while maintaining hardness, are well suited to the surgical industry. 

Other uses

Because of its durability and strength, it is used on sporting equipment such as golf clubs.  It can be used for Musical Instruments such as guitar slides. Another important use of tungsten carbide is for the nibs of ballpoint pens. Tungsten carbide is also used in electrical components, especially light bulbs, because of its heat resistance. Another application of tungsten carbide is in armor-piercing ammunition because it is a durable and tough material. In addition, another interesting and avant-garde application of tungsten carbide is in space satellites, because it can resist extreme temperature fluctuations.

Tungsten Carbide Powder Price

The price is influenced by many factors including the supply and demand in the market, industry trends, economic activity, market sentiment, and unexpected events.

If you are looking for the latest WC powder price, you can send us your inquiry for a quote. (sales1@rboschco.com)

Tungsten Carbide Powder Supplier

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As a leading nanotechnology development manufacturer, RBOSCHCO dominates the market. Our professional work team provides perfect solutions to help improve the efficiency of various industries, create value, and easily cope with various challenges.

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What is Inconel?

Inconel is a nickel-chromium alloy classified as superalloy for its high-performance qualities and corrosion and oxidation resistance. It performs well in low and high-temperature applications where other materials such as steel and aluminum would fail, and also has the ability to resist pitting, corrosion cracking, and cracking.

Nickel Alloy Inconel for High-temperature Applications:

Inconel 600- Excellent strength and easy molding. It can also be hardened and strengthened by cold work. 

Inconel 601- High strength and good machinability with excellent metallurgical stability and high carburizing resistance. 

Inconel 617- High oxidation and carburizing resistance. The nickel alloy Inconel 617 is easy to manufacture. 

Inconel 625- A non-magnetic, corrosion, and oxidation-resistant nickel-base alloy. It has high strength and toughness in the temperature range from low temperature to 1093°C 

Inconel 718- A precipitation-hardened nickel base alloy designed to exhibit unusually high yield, tensile and creep fracture properties at temperatures up to 704°C. 

Inconel X-750- A nickel-chrome alloy for corrosion and oxidation resistance and high strength at temperatures up to 1300 F. 

Inconel Nickel-Chromium Alloy Advantages 

Inconel metals are commonly used in harsh environments where extreme heat and corrosion resistance are required for parts or assemblies to be successful.  Inconel has the following beneficial qualities: 

Excellent fatigue strength 

Excellent corrosion resistance 

Good acid resistance 

Excellent high and low-temperature mechanical properties 

Good resistance to high-temperature oxidation

Inconel Metal Alloy Applications

Inconel provides corrosion resistance and excellent fatigue strength for demanding industrial applications. They can be used in aircraft, marine, chemical processing industries, but their chemical composition and temperature resistance make each of these nickel alloys ideal for custom applications typically required by the following industries: 

space

power generation

nuclear reactor

gas turbine

pressure vessel

What is the Difference Between Inconel and Hastelloy? 

Hastelloy and Inconel are both superalloys with high corrosion resistance and durability.  They cost more than stainless steel, but because of their reliability in harsh environments, nickel alloys are preferred for demanding applications such as geothermal, nuclear, and aerospace.

Inconel is a nickel-chromium alloy that forms a passivated oxide layer when heated, making it resistant to extreme heat and corrosion, as well as pressure and oxidation.  Inconel's chemical composition also gives it excellent resistance to sodium chloride over a wide temperature range, making it ideal for Marine applications or applications requiring continuous exposure to salt and brine.

Hastelloy is a nickel-molybdenum or nickel-chromium-molybdenum alloy, according to the brand, which performs well at high temperatures and is easy to manufacture and form, making it suitable for cold working or welding applications. Because it works well in highly corrosive environments and is resistant to oxidation, Hastelloy is commonly used in chemical processing applications.

In625 and In718 Powder Price

The price is influenced by many factors including the supply and demand in the market, industry trends, economic activity, market sentiment, and unexpected events.

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In625 and In718 Powder Supplier

RBOSCHCO is a trusted global chemical material supplier & manufacturer with over 12-year-experience in providing super high-quality chemicals and nanomaterials. The company export to many countries including the USA, Canada, Europe, UAE, South Africa, Tanzania, Kenya, Egypt, Nigeria, Cameroon, Uganda, Turkey, Mexico, Azerbaijan, Belgium, Cyprus, Czech Republic, Brazil, Chile, Dubai, Japan, Korea, Vietnam, Thailand, Malaysia, Indonesia, Australia, Germany, France, Italy, Portugal, etc.

As a leading nanotechnology development manufacturer, RBOSCHCO dominates the market. Our professional work team provides perfect solutions to help improve the efficiency of various industries, create value, and easily cope with various challenges.

If you are looking for In625 and In718 powder, please send an email. (sales1@rboschco.com)