Our History
Our Factory
HEINDA, which was established in 1987, the main products include floor spring, door closer and automatic door systems. Now HEINDA is the largest floor spring manu-facturer in the world and a leading door control enter-prise in China. Haida Doorcontrol Co., Ltd is HEINDA’ s major manufacturing center in China. It is located near by Shanghai city and it takes only 50 minutes to Shanghai Hong qiao Airport. This factory covers an area of 80,000 square meters, 900 skilled employees, with professional technology titles staff of 68 people. HEINDA’ s annual production capacity exceeds 4,000,000 sets of floor springs, 1,000,000 sets of door closers, and 20,000 sets of automatic door systems. They are successfully exported to over 70 countries and regions throughout the world, such as Europe, South American, Southeast Asia,Middle East. HEINDA has insisted on pursuing high quality and aimed at creating the best door control system in the world, and we will be your best cooperator in the global door control market.
Main international and domestic certification and standards that some of our products passed:
1）American National Standard: ANSI/BHMA 156.4 Grade 1, life cycle test of 2 mil. cycles
2）American UL228 & UL 10C for 3 hours fire testing
3）European Standard CE: EN1154, life cycle test of 500,000 cycles
4）China National Standard: QB/T 2698-2005 Grade 1, life cycle test of 1 mil. cycles
5）China Compulsory Product Certification for fire rated door closer
Our Product
Our Certificate
Production Equipment
Production Market
Our Service
1. The door closer can be replaced with a little oil mark or wet oil mark or trace oil seepage.
2. Large oil leakage of door closers leads to fast closing and no slow closing, which can be compensated.
3. If the door closer is unstable or has abnormal sound, it will not be replaced after debugging; If it cannot be solved after debugging, it can be replaced.
4, the door closer does not go, stuck, inelastic phenomenon, debugging can not be solved, can be compensated.
5, all the above replacement or compensation commitment, need to return the product to the manufacturer for confirmation, verification can be fulfilled after meeting the conditions.
Special attention: the central shaft head of the door closer is artificially polished, or the internal parts are bent and damaged by strong external forces.
The company shall not replace or compensate for the intentional damage of other types or natural factors.
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