Oxygen(O2) is a colorless, odorless, highly oxidizing gas that sustains life and vigorously supports combustion. Oxygen should not be permitted to contact oil,grease or other combustible materials. As such, all equipment used with Oxygen must be specially cleaned. It is used to oxidize certain materials, such as Si to SiO2, or ashing of photoresists and to achieve chemical vapor deposition of oxides. It is also used to make ozone for oxidation or cleaning. It is shipped in steel cylinders under high pressure.

NAME：Oxygen
MF：O2
CAS NO.：7782-44-7
UN NO.：UN1072

1. What's your product price?
Because each gas price depends on your quantity and purity requirements, it is difficult to give a fixed price. If you are interested in some gases, please provide your details. I can offer you an offer.

2. What's the min order?
Different products with different MOQ, please do not hesitate to tell us your needs

3. What's your payment term?
50% T/T deposit, 50% T/T against B/L copy or 100% Irrevocable L/C at sight

4. All the cylinders can recycle?
 Usually seamless steel cylinder can recycle to use in 30 years. The disposable cylinder is only for use one time.when you ordered our cylinders, next time, you can send back the cylinders to fill gas again. You just need to tell us before you export. We will handle all the import customs clearance formalities.

5. Is there any cautions to use gas cylinders?
1) The use and testing of gas cylinder shall be subject to “Safety inspection regulations for gas cylinders” issued by State Bureau of Quality and Technical Supervision. 
2) The gas cylinder shall away from heat and sunlight exposure. The distance from fire should be no less than 10 meter. And it is prohibited to hit the cylinders. 
3) It is prohibited to use fire to heat the valve if it was frozen. 
4) The nozzle of the gas cylinder was strictly prohibited from oil contamination 
5) The gas in the cylinder cannot be entirely exhausted, it would be better to remai
6) The filling pressure of gas cylinder cannot exceed the prescribed pressure.