Plastics
| Sat 15 Aug 2026
Beijing, Aug. 15 -- State Intellectual Property Office of China has awarded a patent to Poly Changda Engineering for Manufacturing Mold of Rpc Steel Bar Box Culvert. Liu Benhua, Xiao Donghui, Xu Wei, Zhang Xuefeng, Xu Yao, Huang Kun, Fang Tao, Fang Lijie, Zhao Yijue, Xu Weicong, Lu Peijing and Zhai Liying developed the invention..