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Battery rescue spreader cutter is a combination of a hydraulic spreader and a hydraulic cutter, so it has the function of both battery rescue spreader and battery rescue cutter. There are several famous rescue equipment brands in the world, Aolai Rescue is the one from China. For battery rescue spreader cutter, there are two types of mechanical structures, the two mechanical structures have their own features, the main difference is the spreading force and cutting force. Type one is cutting force stronger than spreading force, it's the mainstream structure, Aolai Rescue and the most of the brands in the world choose this one, because in the rescue operation, normally, cutting door hinges, striker, pillars and so on always need stronger force than create an opening. Type two is spreading force stronger than cutting force, then the battery rescue spreader cutter is mainly used to tear the resistance.