PBT elastic fiber is a high-quality core yarn material, which consists of PBT fiber core and elastic polyurethane cool fiber covering layer. This fiber material has the advantages of high elasticity and high resilience, high abrasion resistance, high strength and high flame retardancy, etc. It is widely used in the fields of textile, apparel, automobile, household and medical treatment.

Polyester chips usually refer to polyester raw materials produced by polymerization, which are generally processed into flaky particles of about 4*5*2 mm. The process routes of polyester production include direct esterification (PTA) and transesterification (DMT). PTA process has the advantages of low raw material consumption and short reaction time, and has become the main process and preferred technical route of polyester since 1980s. The uses of polyester now include fibers, various containers, packaging materials, films, films, engineering plastics and other fields.