We produce and export static grounding equipments including alarms,cable reels and all kinds of clamps as well as overflow prevention protectors needed in oil depots or other loading systems for hazardous liquid. They are of best quality and high technology. The static grounding clamp and alarm can effectively dissipate the static to the earth and monitor the resistance between the bodywork and the earth in order to avoid hazard during loading explosive liquids eg.oil. The SA-RM series can self-retract its steel wire after usage,which is very convenient.