I-Ultimate Guide yezihlungi zokuphefumula eziyi-3m eyenziwe ngu-Chao MeiAngumkhiqizi ohamba phambili embonini ye-PPE, i-Jiande Chaomei Daily Chemicals Co., Ltd. ibikhiqiza imaski yekhwalithi ephezulu kusukela ngo-1990. Phakathi kwemikhiqizo yabo ebanzi, izihlungi zabo zokuphefumula eziyi-3M. .
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