Trademark differences, product line differences.

1. According to the query on Yiyi Decoration Network, the trademark difference: Zhejiang Oppein’s trademark is “OUPAI”, while Guangdong Oppein’s trademark is “OPPEIN”.

2. Product line differences: Zhejiang Oppein focuses on the production and sales of door products, including interior doors, security doors, and fire doors, while Guangdong Oppein covers cabinets, bathrooms, and wooden door product lines.