adjustable hydraulic hinge damper

1.Hongfeng Zhiyang has passed ISO9001 quality standard certification, strict quality control, and adopts ERP management system for the whole process from raw materials to finished product packaging. Hongfeng Zhiyang focuses on innovation and research and development. Technological breakthroughs have been made, and a number of patents have also been obtained. 2.Hongfeng Zhiyang regards product quality as the first mission of the enterprise. The company sets up multi-period cycle quality inspection to ensure that each batch of products meets customer requirements.