Dab tsi yog Cov Khoom Siv Tseem Ceeb rau Kev Tsim Kho Plaster Putty? Kev tsim kho plaster putty, tseem hu ua gypsum putty, yog ib hom khoom siv hauv tsev siv los txhaws qhov khoob thiab tawg hauv cov phab ntsa, qab nthab, thiab lwm qhov chaw. Nws yog tsim los ntawm kev sib xyaw ntawm cov khoom siv raw, txhua qhov ua haujlwm rau sp ...
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