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Test Plates manufacturer, supplier, factory, exporter--China Hangzhou Kunlun Co.,Ltd. is a professional manufacturer and exporter of Test Plates, Convex-Concave Lenses,lenses etc.Our factories are located the technopole city of HANGZHOU ( Zhejiang Province in China). We have been in the scooter industry for mangy years and have been distributing different designs of Test Plates,lenses to fit all transportation and entertainment needs. All our products sucha as Test Plates,Convex-Concave Lenses are made under squality control system