KN95 lub ntsej muag lub ntsej muag thiab Lub ntsej muag tiv thaiv pej xeem: CE tau ntawv pov thawj, ntawm daim ntawv teev npe dawb ntawm Tuam Tshoj Chamber of Commerce rau Ntshuam thiab Export tshuaj thiab cov khoom noj qab haus huv, kev sau npe hauv tsev.