SJ2B60-5MU,SJ2B60-5MNU,无锡昌林，SJ2B60-5MOU,4通电磁阀 SJ2B60-5MU,SJ2B60-5MNU,无锡昌林，SJ2B60-5MOU, 无锡市昌林自动化科技有限公司