The situation of new types of degradable plastics at Shanghai Petrochemical

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These days, an article titled “New Type of Bioplastic Developed in Shanghai” published online reads as follows: When buried in soil, it reaches the degradation rate specified in the standards after just 3 months – a rate that would be achieved only after half a year of burial under normal conditions. On February 4, Shanghai Petrochemical reported that a new type of bioplastic resulting from an innovative manufacturing process – biodegradable polyester – has undergone pilot production at the company, with batch products being manufactured. 　　This biodegradable polyester, developed through a collaboration between Shanghai Petrochemical and the Beijing Research Institute of Chemical Technology under Sinopec, utilizes Sinopec’s proprietary production processes and catalysts. According to tests conducted by the **Plastic Products Quality Supervision and Inspection Center, after 94 days the degradation rate reached 62.1%, which meets the criteria defined in ** standards for biodegradable plastics. Comparative tests with degradable products manufactured by a well-known foreign company showed that their biodegradability is at the same level. 　　Compared to other bioplastics that are already available on the market, this new type of bioplastic developed by Shanghai Petrochemical features significantly improved heat resistance, with a heat deformation temperature exceeding 100°C. It can be widely used in applications involving disposable items such as tableware and medical supplies, as well as in packaging applications like tote bags, packaging films, garbage bags, food container boxes, and packaging for electronic devices. It is also suitable for use in agricultural fields, such as in agricultural films and as materials for the controlled release of pesticides and fertilizers. More importantly, this new type of bioplastic can be blended in certain proportions with biological materials such as starch to produce various products. Once discarded, these supplies become “food” for microorganisms in the soil. Microorganisms break down these \"feasts\" in a harmless manner by consuming them. Is there anyone who knows the specifics? Could you please provide a detailed explanation? Thank you in advance!