Ngokuthuthuka kwezinga lobuchwepheshe laseShayina, ama-valve azishintshayo akhiqizwa yi-ChemChina nawo asetshenziswe ngokushesha, angaqedela ukulawula okunembile kokugeleza, ingcindezi, izinga loketshezi kanye nezinga lokushisa. Ohlelweni lokulawula oluzenzakalelayo lwamakhemikhali, i-valve elawulayo inge...
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