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Carbon Fund
Carbon fund is invests in greenhouse gas reduction projects or CERs by raising fund from investors in the financial markets. Currently, most of the carbon funds are invested in the clean development......
ECO-FRONTIER CO., LTD.
Vanadium
Vanadum is a light gray metal with a high corrosn resistance and is also an important element for steel alloy. * Usage : Vanadium pentoxide, Ferro Vanadium
ENERTEC CO., LTD.
Molybdenum
Sliver colored with rich malleabilIty. It is used as a raw material for special steel and materiaLs for all types of electronic parts. * Usage : special steel, materials for electronic parts
ENERTEC CO., LTD.
Hydrogen
Hydrogen has a possibility as a fuel for aircraft and vehicles and it is receiving a spotlight as replacement energy for the future. It is playing an important role for high tech industrial developm......
CHUNGHAN
ARGON(Ar)
Argon is colorless, tasteless, odorless, inert gas and it doesn’t react with other materials under any conditions, so the demands as shielding gas for welding is getting bigger. Liquid argon is 1.4 ......
CHUNGHAN
Oxygen
Oxygen gas is colorless, tasteless, odorless, Oxidizing Gas and it is a energizer for living life. Liquid oxygen is pale blue and it is little bit heavier than water. When it is evaporated, it beco......
CHUNGHAN
Medical gas
Chung Han is supplying different kinds of medical mixed gases on a right time according to the requests from medical industry.
CHUNGHAN
Ultra high purity gas for experiment
High purity gas is used by different kinds of research institutions like metal, petrochemistry and semiconductor industries. High purity gas can be divided into inorganic and organic and Neon, Oxyg......
CHUNGHAN
Mixed gas
The mixed gases are used for various industrial fields such as welding, medical, lighting, laser, ocean development and others. The mixed gas is created by combining more than 2 kinds of high purit......
CHUNGHAN
Material gas for semiconductor
For the production and research for semiconductor, semiconductor gases are required such as Dopant, Etchant, Diffusion gases to make the semiconductor characteristics. Also the special gas for semi......
CHUNGHAN
Dual structure CNT Bulk
Content- 1 wt% (D.I. water) Content- 1.25 wt% (Ethanol) Surfactant type : Non used.
Nano Karbon
Dual struture CNT 75L
Content- 1 wt% (D.I. water) Content- 1.25 wt% (Ethanol) Surfactant type : Non used.
Nano Karbon
Dual struture CNT 50L
Content- 1 wt% (D.I. water) Content- 1.25 wt% (Ethanol) Surfactant type : Non used.
Nano Karbon
Dual struture CNT Bulk
Outer diameter : 40 ~ 150 nm Inner diameter : 10 ~ 80nm Length : under 20 um Length : (Cutting treatment : under 5um) Purity : > 80% (Fe<20%)
Nano Karbon
Dual struture CNT 75
Outer diameter : 60 ~ 80 nm Inner diameter : 30 ~ 50nm Length : under 20 um Length : (Cutting treatment : under 5um) Purity : > 85% (Fe<15%) Purity : (HCl treatment : Fe ( < 3%)
Nano Karbon
Dual struture CNT 50
Outer diameter : 40 ~ 60 nm Inner diameter : 10 ~ 30nm Length : under 20 um Length : (Cutting treatment : under 5um) Purity : > 85% (Fe<15%) Purity : (HCl treatment : Fe ( < 3%)
Nano Karbon
Mixed Gas
It is mixed with two kinds of pure gases, and homogeneity, accuracy, analysis preciseness and the correctness of indicated value are very important in it. Mixed gas is used for medical treatment ......
SUNDO INDUSTRIAL
Electrical Semiconductor Gas
Though it is not different with other special gases, recently it is divided independently with its most used amount and increased kinds. The special gas for electric semiconductor uses almost ki......
SUNDO INDUSTRIAL
Hydrogen
As a colorless, scentless combustible gas, it has the smallest specific gravity among all kinds of gases and has highest diffusion speed with 1.8㎞/sec. So it could be explosive when it is leaked......
SUNDO INDUSTRIAL
Nitrogen
The liquid separation of the air by the method of super low temperature makes this gas to be colorless, tasteless and scentless in both liquid and gas states. The nitrogen in liquid state is lig......
SUNDO INDUSTRIAL
Oxygen
As a kind of oxidizing gas that is colorless, tasteless and scentless (but its color is light blue in liquid state), it is an important gas that is the base of all creatures’ activity. Though oxygen......
SUNDO INDUSTRIAL
Mixed gases
Used in various kinds of industrial fields with mixing with more than 2kinds of high-degree-pure gases.
DONGHAE GAS IND CO., LTD.
gases for Semicoductor Fabrication Process
gases for Semicoductor Fabrication Process are classified to DOANT, ETCHANT, REACTANT, RFACTANT, and PURGE. Most of them ate toxic. High degrees of purity is required when use.
DONGHAE GAS IND CO., LTD.
Standard gases
They are used for controlling the qualities of industrial and experimental spectroscopes, gas chromatography, heat transferring type analyzers, infrared spectrometers, accuracy of analysis and preci......
DONGHAE GAS IND CO., LTD.
Puer Speciality gases
Puer Speciality gases are used for the industries of steel, petrochemical products, cars, Semi-conductors and various experiments and studies. There are two types of Pure Specialty Gases: Inorgan......
DONGHAE GAS IND CO., LTD.
Hydrogen - H2
-Colorless, tasteless, odorless -The lightest among known gases -Flammable gases, widely explosive -High degree of defusing and heat transferring -Penetrated easily into steels under......
DONGHAE GAS IND CO., LTD.
Helium - He
-Colorless, tasteless, odorless -Lighter than hydrogen -Soluble in water -inflammable -Boils at -269℃
DONGHAE GAS IND CO., LTD.
Ethylene-C2H4
-Colorless, tasteless, odorless -Flammable, harmless, narcotic -Insoluble in the water but soluble in alcohol-ether -Boils at -145℃
DONGHAE GAS IND CO., LTD.
Carbon Diocide - CO2
-Colorless, tasteless, odorless -Heavier than the air -Incombustible -Cooling or aerating fast liquefied carbon dioxide -Abstracting solid carbons -Boils at -78.5℃
DONGHAE GAS IND CO., LTD.
Acetylene-C2H2
-Colorless, tasteless, odorless -Lighter than the air -Insoluble in the water -Highly and widely expiosive -When deflagrated with oxygen, it is capable of providing 3000℃ high temper......
DONGHAE GAS IND CO., LTD.
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