... Our CompanyZhongbo Heavy Industry Machinery & Equipment Co.,Ltd ,which was set up in 2008. Located in Fuzhuang Industrial ... Zone,Botou City,Hebei Province,which is close to 104 National Road and Beijing to Shanghai Expressway,with convenient transportation. ... "spark reduced", "spark-resistant" or "spark-proof" tools are names given to tools made of metals such as brass, bronze, Monel metal ...