Inverted hlau kos duab tshuab yog lub tshuab nqus hlau nrog ob lub zog ntawm cov hlau kos duab thiab xaim xaim, uas yog tsim tshwj xeeb rau kev ua haujlwm tsis tu ncua thiab twist-dawb ntawm cov coils loj.Nws yog tsim rau kos duab siab, nruab nrab thiab qis carbon steel hlau, tshwj xeeb zoo li tus hlau hlau, stain ...
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