... spring balancer----coil spring from Korea(B&F engineering co,ltd,d·metal co,ltd ). All coil spring can bear 60,000times continuous ... in most of civil car plant such as CHERY AUTOMOBILE CO.,LTD., CHINA NISSAN,CHINA FOTON, etc.Spring balancers together with ... coil spring,it prevents the sudden move of the drum.) D-Manual Stopper Pin (In order to prevent the risk of ...