2W-10S,2W-15S,2W-20S,2W-25S,2W-32S,2W-40S,2W-50S,直动式膜片式不锈钢电磁阀 2W-10S,2W-15S,2W-20S,2W-25S,2W-32S,2W-40S,2W-50S, 无锡市昌林自动化科技有限公司