Established in 1999, Yantai Tri-Circle Door Industry Co., Ltd. is specialized in the research, development, manufacture, sale and after-sales service of all types of security doors.



Specifically, our main products include security doors, fireproof doors, remote control doors and hardware products. Relying on superior quality, stable performance, excellent service and competitive price, our products sell well in both domestic and overseas markets.



Moreover, we have make considerable efforts on the continuous improvement of managerial system and advancement of...