On December 9, 2020, it passed the GRS certification and obtained the GRS certificate. GRS is a global recycling standard, English name: GLOBAL Recycled Standard (referred to as GRS certification), is an international, voluntary, and standard for complete products. The content is aimed at supply chain manufacturers' enforcement of product recycling/recycled content, chain of custody control, social responsibility and environmental norms, and chemical restrictions, and is certified by a third-party certification body.