Tshawb nrhiav peb BSP Txiv neej Captive Seal Plug muaj nyob rau hauv ntau yam tiav xws li zinc plated, Zn-Ni plated, Cr3, thiab Cr6 plated.Xaiv los ntawm lwm cov ntaub ntawv xws li stainless hlau, carbon steel, los yog tooj dag rau koj cov kev xav tau tshwj xeeb.