2003  The company predecessor Cola music started to research and develop piano slow fall devices.

2005  Commited to R&D for various type of built-in piano slow fall devices.

2008  R&D special hydraulic parts for Joyoung & Haier.

2009  Quality of piano slow fall devices has acquired approbation of many customers including YAMAHA, KAWAI ,Pearl River etc.

2010  Keep improvement & innovation of piano slow fall devices , become number one in worldwide piano slow fall device market share. Started the R&D of innovative hydraulic door hardware.

2011  Establish Pentagon Technology Co. to focus in the R&D of innovative hydraulic door hardware,has applied for and obtained a plenty of patents.

2012  Participated in industry fairs, presented and introduced our new products to the market. Constanly improving products according to customers’ feedback and demands.

2013  Batch production of hydraulic door hardware started.

2014  Quality stable in batch production, looking for customers & agents who have same core values with us to develop the market.

2015  Ningbo Pentagon Damper Corporation has successfully been listed on the Third board.

2016  We keep on going…


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