Oppai is the vice president unit of China Wooden Door Association, a national high-tech enterprise, in 2011 was named "China Famous Trademark", and has won the title of "China Quality Assured National Standard Qualified Product". Oppai's wooden door products are outstanding, not only with Evergrande, Vanke, Poly and other well-known domestic real estate enterprises to establish a strategic partnership, but also has the right to import and export, more than 80% of its products are exported to Europe, the United States, Japan, South Korea and other countries. At present, Oppai interior doors mainly include molded doors, solid wood doors with composite paint doors, solid wood composite paint-free doors, etc., and the raw materials used are E1 grade environmentally friendly boards, which have different models for living rooms, bedrooms, kitchen and bathroom lights, and have a large choice of styles and colors. The price of paint-free doors is 2000-2300 yuan, while the lacquer doors are slightly more expensive, around 3000 yuan. Oppai's wooden doors have a one-year free warranty service, and there are about 2,000 terminal stores across the country, and the pre-sales and after-sales services are very comprehensive.