WBGX/D372X-6/10/16单偏心蜗轮传动对夹式软密
D943W-16/25/40..
WBGX/D372X-6/1..
D815W/F D830W/..
D943H-16/25/40..
D971X-6/10/16对..
WBS-16/25C消防**..