Recently, the Fujian Provincial Provincial Quality Inspection Institute research project “Research on the Rapid Detection Method of Polycarbonate and Its Recycled Products†concluded its research results and was the first in China to rapidly identify PC recycled materials. The research project measured the melt flow rate (MFR), heat loss weight temperature, molecular weight size, and molecular weight distribution of different grades of PC raw materials and primary recycled materials, secondary recycled materials, to determine whether the product was processed using recycled materials. Quick identification method.