Kwiminyaka yakutshanje, i-China ibe ngumdlali ophambili kwimakethi ye-titanium dioxide yehlabathi, iqinisa isikhundla sayo njengomthengisi okhokelayo wale mathiriyeli ibalulekileyo yemveliso. Ngobutyebi obuninzi, izakhono zemveliso ephucukileyo kunye namaxabiso akhuphisanayo, iChina iye yaba ngumthombo okhethwayo we ...
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