Inverted Hlau Drawing Tshuab

Inverted hlau kos duab tshuab haum rau siab-, nruab nrab-, thiab qis- carbon steel hlau, stainless hlau xaim, tshwj xeeb- zoo li tus hlau hlau, nrog rau cov hlau tsis yog- ferrous hlau xws li tooj liab thiab txhuas.