What is a self-closing fire door?

Name: Yongkang SkyLink Door Industry Co., Ltd.
Address: 2nd Floor, Building 1, No.13 Qingyuan Road, Dongcheng Sub-district, Yongkang City, Jinhua City, Zhejiang Province, P.R.China, Yongkang City, Zhejiang, CN
Telephone: +8619016916946
Price range: ¥¥¥

A self-closing fire door is a type of fire door that closes automatically after being opened, without requiring manual intervention……