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On December 6,2016,China Rubber Industry Association extended quality credit to the conveyer belt products ofZhejiang Sanwei Rubber Item Co.,Ltd.and the rubber hose products of Sichuan Chuanhuan Technology Co.,Ltd.with the Document Zhong Xiang Xie Zi No.[2016]71.rnIt is required in the document that the two companies that were extended quality credit should abide by relevant regulations listed in the letter of commitment,reinforce the quality management on workmanship,and steadily improve product quality.Extensive monitoring on quality and regular sampling tests will be conducted over products that are extended quality credit during the two-year term of validity in order to take responsibility for users and the public.