The opening ceremony of the 130th Canton Fair and Pearl River International Trade Forum was held in Guangzhou. This Canton Fair is a landmark international trade event held in a special international environment. Control and economic and social development have achieved strategic results.

Polyvinyl alcohol (PVA) is a high-molecular polymer, made from vinyl acetate (VAC) through polymerization and alcoholysis. It has good adhesion, film-forming properties, oil resistance, and colloidal protection. Pollution-free and degradable characteristics rarely seen in polymer materials.

In recent years, the development of new biodegradable packaging materials has received extensive attention.