This document specifies the types and limit values of hazardous substances in thermoplastic polyurethane (TPU), including 8 hazardous substances such as heavy metals and phthalates. It defines the terms thermoplastic polyurethane, limit, heavy metals and phthalates, etc., describes the corresponding test methods, and specifies the relevant content of the inspection report. This document applies to TPU manufacturers to declare the conformity of their products, or as a basis for signing trade contracts between the manufacturer and the purchaser, or as a basis for third-party product qualification assessment.