Oupai's plate is E 1 grade. The formaldehyde emission of Oupai board is directly less than 1mg/L, the moisture-proof performance can reach the international standard, and the water absorption expansion rate is 8%. All of its materials can basically meet the national environmental protection standards, belonging to healthy and environmentally friendly materials, and also have the ten ring certification mark of the Environmental Certification Center of the Ministry of Environmental Protection of China. Oupai Home Furnishing Group Co., Ltd. was established in 1994, with the whole cabinet as the leading factor, which promoted the development of related industries, including whole house customization, wardrobe, bathroom, metal doors and windows, armored door, soft decoration, kitchen appliances, furniture, household items, and large self-assembled households. And formed a diversified industrial structure. China is a comprehensive modern integrated home service provider. Oprah Winfrey is a luxury fashion brand under the Group, focusing on the young household style. In 2020, Oupai launched a high-end brand and officially entered the HD market.