... 2.Ten Years Experience of manufacturing ZL Series speed reducergearboxZibo City Boshan Wanxin Speed Reducer Co., Ltd. is a specially appointed ... enterprise producing all sorts of speed reducers in Northern China.Main products: ZDY, ZLY, ZSY, ... -L, and NGW-S planet gear speed reducers; B and X series of cycloidal planetary gear speed reducers; ZQ, ZD, ZL, ZS, and ...