Hangzhou Spring Co., Ltd. is specialized in manufacturing ICE valve spring, high-pressure oil pump and pneumatic hydraulic element spring, pressure-adjusting spring, dilevery valve spring, clutch spring, plunger spring, absorbor spring and so on.

The company owns sound technical force and complete testing procedures to self-develop new products and technological process. The company has been accredited ISO9002 in 1999, passed ISO9002/QS9000/VDA6.1 Quality Management System Certification of Swedish SGS in 2002 and ISO/TS16949 Quality Management System Certification in 2003. Taking LANLING as the trademark, the products are exported to America, Europe, Japan and Southeastern Asia.