2, Liansu (PVC, PP-R, PERT, PE), China famous brand products, China well-known trademarks, listed companies
3, Weixing (PP-R). China famous brand products, China famous trademark
5, Zhongcai (PVC, PP-R, PERT, PE), China famous brand products
6, Rifeng (PP-R, PERT), China famous brand products, China famous trademark
7, Golden Horn (PP-R, PERT), China famous brand products. PP-R), China famous brand product
1, Yatong (PVC, PP-R), China famous brand product, China famous trademark
"China famous brand product" certificate 211 has expired, and it will not be issued by the General Administration of Quality Supervision. But the brands that have been acquired are all big brands.