This support is mainly used on car trail door, bus door,box cap and so on. Advantage:1.Making fine, ... .Superior quality and knight service.3.Through ISO9001:2000 quality system certification.4.Excellent paint surface.5.Competitive price. Production advantage ... weight from 40N, ,80N,100N,120N ,150N,200N or more for choice. ·100,000 times open and closing test. ·Apply to ...