300125k9//100//175200/直径/.平/5001508mmf75.50mmy50//凸透镜2

-水阀常-50/--电磁阀20w25025-40w1602w5001508w400-w2002w025闭

5001508 2w040 电磁阀amsi-- 2w200///2w025/2502w160350400/xlpc

-水阀---常25--20w25040w160/闭w2002w0252w5001508w40050电磁阀