Group 1 - The core viewpoint of the article highlights the recent acceptance of the environmental impact report for Zhejiang Jinggong Carbon Material Technology Co., Ltd.'s 40,000 tons/year high-performance PAN fiber project, with a total investment of 198.401 million yuan [3][4] - The project will consist of eight production lines, each with a capacity of 5,000 tons per year, utilizing propylene as the main raw material and dimethyl sulfoxide as the solvent [3] - The production process involves a one-step polymerization method to create PAN fiber, which includes several stages such as coagulation bath, washing, oiling, drying, air finishing, and steam stretching [3] Group 2 - The polymerization process for this project employs a gradient heating DMSO semi-batch solution polymerization method, which is a first in the country regarding the process route, raw material route, or operational route [4] - Jinggong Group, founded in 1999, focuses on green industries and sustainable development, providing high-quality green products and services across various sectors, including steel structure integrated buildings and new green building materials [5]