4WE10V31/OCW220NZ4,4WE10V31/OCG24NZ4,4WE10V31/OCW220RNZ4,4WE10V31/OCW220NZ5, 4WE10V31/OCW220NZ4,4WE10V31/OCG24NZ4,4WE10V31/OCW2 无锡市昌林自动化科技有限公司