Three-way Stopcock 医用三通阀 ; 三通旋塞阀 ; 阀配件 ; 三通旋塞

burette with three-way stopcock 带三路活塞的滴定管

combined three-way stopcock 复合式三路旋塞

cross-type four-way stopcock 十字形四路旋塞

one-way stopcock 单路塞

three way stopcock 三路活塞

three-way glass stopcock 三通玻璃栓

burette e with three-way stopcock 带三路活塞的滴定管

straight two-way vacuum stopcock 直型二路真空活塞