ARGON， COMPRESSED

BORON TRIFLUORIDE

BROMOTRIFLUOROMETHANE ( REFRIGERANT GAS R13B1)

BUTADIENES， STABILIZED or BUTADIENES AND HYDRO CARBON MIXTURE， STABILIZED， having a vapour pressure at 70℃ not exceeding 1.1MPa and a density at 50℃ not lower than 0. 525kg / L

BUTANE

BUTYLENES MIXTURE or 1⁃BUTYLENE or cis⁃2⁃BUTY LENE or trans⁃ 2⁃BUTYLENE

CARBON DIOXIDE

CARBON MONOXIDE， COMPRESSED

CHLORINE

CHLORODIFLUOROMETHANE ( REFRIGER⁃ ANT GAS R22)

CHLOROPENTA⁃ FLUOROETHANE( REFRIGERANT GAS R115)

1⁃CHLORO⁃1， 2，2，2⁃TETRA⁃ FLUOROETHANE( REFRIGERANT GAS R124)

CHLOROTRIFLUOROMETHANE ( REFRIGERANT GAS R13)

COALGAS， COMPRESSED

CYANOGEN

CYCLOPROPANE

DICHLORODIFLUOROMETHANE (REFRIGERANT GAS R12)

DICHLOROFLUOROMETHANE (REFRIGERANT GAS R21)

1，1⁃DIFLUOROETHANE( REFRIGERANT GAS R152a)

DIMETHYLAMINE， ANHYDROUS