Our company produces explosion-proof tool products have 9 series, nearly 4000 kinds of specifications, strictly in accordance with the national standard GB10686-89 to carry out and do destructive experiments, explosion-proof performance pass rate of 100%, widely used in petrochemical, petroleum, offshore oil, large-scale chemical enterprises, military, coal mines, oil extraction, refining, gas extraction, power plants, aluminum plants, metallurgy, storage and transportation, gas and other flammable and explosive industries and large-scale mechanical maintenance and support. Special steel tools have more than 60 varieties, nearly a thousand specifications. Among them, knocking plum wrench, knocking open wrench, single-headed wrench, etc. are in line with DIN744,DIN133,DIN894,DIN895 and other national standard.