... electric hoist is designed, produced, checked and accepted basing on rule of GB3836-2000, the power mark are dIIBT4 and dIICT4, ... T1-T4 class mixed with fireable gas, steam, bomb air of 1 and 2 site(as table one ). Working ambient ... dimethyl etherdiethyl ether,butyl oxidedII Chydrogen,water gasacetyleneHeadroom of small size, make full use of workshop space available;Stable operation, Fast fixing ...