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khoom

Xaiv rau precision nrog peb xaiv cov hniav, suav nrog cov nruas tuaj thiab hloov cov hniav thiab lwm tus. Nrog ntau tshaj 17 xyoo hauv kev lag luam, peb cov khoom lag luam kev sib kho, CE thiab ISO cov nqi sib tw, thiab cov muag khoom sib tw, thiab muag khoom sib tw. Hu rau peb pab neeg muag khoom tau txais kev pab tus kheej.