Our business area is following, 1.Industrial gases, such asC2H4, LAr, LHe,LN2, LO2 and etc. 2.Electronic special gases, such as BCL3, CL2, SiH4, PH3, CHF3, C2F6, CF4, SF6, NF3, N2O, NH3, CO2. 3. Isotopic gases, such as deuterium gas and tritium gas. 4.Rare gases, such as Ar, He, Ne, Kr, Xe and etc. 5.Superhigh purity gases, such as Ar, He, H2, N2, O2 and etc. 6.Laser mixed gases, such as excimer laser gases, photochemical etching gases, and etc. 7.Other gases.