D971X-10S/F2/V/U型电动蝶..
D671X-10S/F2/V/U型气动蝶..
D71X-10S/F2型手柄式蝶阀
D71X-10S/V型手柄式蝶阀
D71X-10S/U型手柄式蝶阀
D371-10S/F2型蜗轮式蝶阀
D371-10S/V型蜗轮式蝶阀
D371-10S/U型蜗轮式蝶阀
