... grounding and exothermic welding products manufacturer and export in china.We have UL,CE,ISO9000 and other international certificates ... , grounding electrode, GEM and so on.eavy Duty Clamps Description: Heavy Duty earth Clamps are made of high quality stainless ... pneumatic or power tools, the installation is very simple.Heavy Duty Clamps Application: Mainly used in ships, diesel engines, gasoline ...