The raw material for plastic products is primarily synthetic resin, which serves as the backbone of plastic and typically accounts for 40% to 100% of the total plastic weight. In addition, various additives—such as plasticizers, stabilizers, and colorants—are often incorporated into plastics to enhance their performance.

Major Types of Synthetic Resins

Common synthetic resins include:

Polyethylene (PE): Used to make plastic bags and more.
Polypropylene (PP): Commonly used in mineral water bottles, among other applications.
Polyvinyl chloride (PVC): Commonly used for water pipes and more.
Such as polystyrene (PS).
Source of raw materials

Synthetic resin raw materials primarily come from fossil fuels such as petroleum and natural gas, which are refined and processed through chemical reactions. In recent years, bio-based plastics made from corn starch have also emerged, though they remain more expensive.