Ncaj Nraim Plain Arms Stopcocks

◎ Tsim los ntawm borosilicate iav nrog PTFE yuam sij rau siab tshaj plaws tiv thaiv tshuaj tua kab mob.
◎ Barrels yog polished heev thiab cov yuam sij yog nws tus kheej lubricating, tsis txhob xav tau cov roj stopcock.
◎ Cov yawm sij yog hloov pauv tau thiab muab ua tiav nrog cov yas ntsia hlau xov tuav cov cuab yeej.
◎ Ua rau taper ntawm 1:10 muab kev sib xyaw ua haujlwm thiab kev ua haujlwm yooj yim.