Currently, Henglong group owns 245 active patents, of which 19 are inventive ones. A large number of own patented technologies provide strong support for technical upgrading and development for Henglong group. 

Liquid stabilizer to improve hydraulic noise in steering (inventive patent)    Low noise auto steering turning valve (utility) 

hydraulic valve with composite limiting input shaft ( utility )   A rack control structure of Rack & Pinion HPS ( utility )