D641X-16供应上海蝶泉牌D641X-16气动法兰蝶阀 DN80

D381X-16供应DN125涡轮沟槽蝶阀D381X-16涡轮蝶阀

供应上海蝶泉专业供应电动二通阀

D381X-16供应DN100涡轮沟槽蝶阀D381X-16涡轮蝶阀

D81X-1.6供应DN125手柄沟槽蝶阀D81X-1.6手柄蝶阀

D381X-1.6供应新型蝶阀D381X-1.6

D971X-1.6供应电动对夹阀D971X-1.6

D71FP-1.6供应新型不锈钢对夹蝶阀D71FP-1.6