Ningbo Pentagon Damper Technology Co., Ltd. is a scientific and technological enterprise which focus in the production of hydraulic soft close door hinge, piano dampers, appliance dampers, magnetorheological shock absorbers etc. Locates in the beautiful port city Ningbo.

More than 10 years, it has been committed to R & D of various of piano fallboard soft close device, has got a variety of patents, and captured 20% share of the global piano damper market.

We have accumulated mature and advance experience through the process of keep improving our products and supplying satisfactory customized products to many public companies. Pentagon technology is gradually becoming an internationally competitive enterprise in hydraulic light industrial application area.

Hydraulic auto close door hinge which is our main developing product at this stage has been paid more and more attentions by worldwide customers for its scientific design, high precision, nice appearance, reliable performance and long life. We focus on the professional manufacturing and technology development of core hydraulic parts and outsource the normal metal parts to make final assembling after high standard and strict testing.

We persist in the principle of quality first, integrity-based, people oriented and independent innovation. We are trying our best to provide the best quality and service to the customers all over the world. Let's make joint efforts. We are willing to create a brilliant future together with you!