The current GRS certification has become the threshold for textile companies to connect to the international market, and it is also a key part of the current industry upgrade. The so-called GRS certification is the abbreviation of the Global Recycled Standard, and it is the verification standard for recycled fiber developed by the international environmental protection certification body - the Control Union. Recycling fiber is the recycling of waste resources, allowing limited resources to be infinitely recycled, which has become the development requirement of the global textile industry. For textile companies that want to export, GRS certification has become an inevitable requirement. It is understood that if a company wants to apply for GRS certification, its upstream supplier of recycled raw materials should also have a GRS certification certificate, and its supplier should also provide a GRS compliance certificate when conducting GRS certification for the company.