Classification and sources of plastic pellets

Classification and sources of plastic particles: Plastic particles are mainly divided into primary materials, secondary materials, and tertiary materials. 

First grade materials are made from unused scraps and have good quality; Secondary materials are raw materials that have been used once and have good quality; Third grade materials are raw materials that have been used multiple times and have poor quality. Plastic pellets can be obtained in bulk through specialized purchasing units, obtaining scraps from plastic product manufacturers, or self purchasing.