1. Door sign anti-counterfeiting: Jiangshan Oppai’s door signs have different locations due to different door materials. The anti-counterfeiting mark on the wooden door is a copper anti-counterfeiting mark. This copper anti-counterfeiting mark is inlaid on the top of the side of the door leaf and is a round Oppein trademark. The copper anti-counterfeiting mark on the aluminum alloy door is located above the aluminum alloy door and is rectangular. Oppein trademark.

2. Anti-counterfeiting label: Oppein’s anti-counterfeiting label is located on the carton of the wooden door. The anti-counterfeiting mark of the wooden door is located on the side of the carton. The anti-counterfeiting mark of the aluminum alloy door is located above the packaging carton. They are all unified anti-counterfeiting marks. , mainly consists of four parts, namely: golden OUPAI trademark, Tuanhua technology anti-counterfeiting, QR code anti-counterfeiting and red background with white letters on the Oupai wooden door. Customized words for the whole house. Each anti-counterfeiting mark has different characteristics to prevent counterfeiting.

3. Self-service query: Search the Jiangshan Oppein official website, click to enter, and open the "Anti-Counterfeiting Query" in the "Quick Links" column for identification.

4. Manual query: Search Jiangshan Oppein official website, click to enter, and check the authenticity of Oppein wooden doors through "Oppein Service-Service Hotline".