两大尼龙项目公示，规模合计75万吨

Group 1 - The article discusses two major nylon projects recently announced in China, highlighting their significance in the nylon industry [2][3] - Tianyue (Tianmen) New Material Technology Co., Ltd. has received approval for a 300,000 tons/year nylon 6 polymerization project, with a total investment and construction timeline detailed [2] - Pingmei Shenma (Ningdong) Nylon Chemical Co., Ltd. is set to develop a 450,000 tons/year caprolactam integrated project, with significant environmental investment and infrastructure planned [3] Group 2 - The Tianyue project is located in Hubei Province, covering an area of 150 acres, and aims to produce 300,000 tons of nylon 6 slices annually [2] - The Pingmei Shenma project, located in Ningxia, has a total investment of approximately 884.83 million yuan, with 103.66 million yuan allocated for environmental protection [3] - The projects are part of a broader trend in the polymer industry, with various forums and events planned to discuss innovations and applications in new materials [5][6][8]