In 2015, Hsinpu Chemical Fiber Plant designated Fiber SBU to demonstrate supplier audit. In 2017, the plant established Supplier Management Regulations and formed Supplier Management Task Force with the various SBUs under the plant. In addition to conducting regular supplier audit, the task force also evaluates new suppliers, regulates the review process and manages irregularities in supplier quality to enhance the supplier management system and evaluation on the product quality from suppliers. Regarding key auxiliary materials, the task force has set forth the following missions:

1. Supplier Evaluation
   Every December, the plant conducts review on the pass rate for material feed, quality assurance, delivery schedule and willingness to cooperate. In 2019, a total of 165 suppliers were evaluated and all are in compliance with the highest standards from the customers.
2. Supplier Audit
   The plant conducts document review followed by onsite review if needed. In 2019, 74 suppliers were audited. Among them, 19 underwent onsite audits. All suppliers are in compliance with the highest standards from the customers.