PCR, tom qab cov neeg siv khoom siv rov ua dua tshiab, yog tsim los ntawm cov khoom yas.Los ntawm kev sau cov khoom yas thiab remaking rau hauv resins rau yas industries los tsim cov khoom tshiab.Nrog rau kev rov ua dua tshiab, ntau qhov teeb meem ib puag ncig tuaj yeem daws tau.