Granite yog cov khoom siv nrov rau tshuab txaj hauv wafer ua khoom siv vim nws qhov tshwj xeeb rigidity, siab hnyav, thiab zoo heev tiv taus hnav thiab corrosion.Txawm li cas los xij, txawm tias nrog cov khoom zoo no, granite tshuab txaj tsis muaj kev tiv thaiv rau qee yam def...
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