The product design, load-bearing test, marking and quality control all conforms with CJT211-2005 polymer based compound material manhole cover standard, as well as European standardEN124-1994 and enterprise standard Q/CL2005-01.

• 产品设计要求、承载试验、标识、质量控制，执行CJT211-2005聚合物基复合材料井盖标准，以及欧洲标准EN124-1994及企业标准Q/CL2005-01。