Core Viewpoint - Sinopec has successfully tested its fully biodegradable PBST film in a cotton field demonstration project in Urumqi, Xinjiang, addressing the issue of film residue and stabilizing cotton yields [1] Group 1 - The PBST film is developed with completely independent intellectual property rights [1] - The project covers an area of ten thousand acres, showcasing the effectiveness of the biodegradable film [1] - The successful trial provides a feasible solution to the problem of plastic film residue in cotton farming [1]