... : 1:ISO9001,CRCC 2:PATENT LB600 type electric double wrench:1:ISO9001,CRCC2:PATENT Our company is a leading ... railway maintenance equipments in China.. Products include rail cutter, rail grinder, rail drilling machine, track lifting and lining machine, railway ballast ... the formation of a very high reputation LB600 type electric double wrench Application:Suitable for railway line sleeper bolt and nut ...