Zhejiang ISRI Shuangdi Spring Co., Ltd. is a Sino-German joint venture established in 2005. It is a high-tech enterprise specializing in the production of automotive springs and other key components, integrating R&D, design, production, sales and service. It is also a national "Little Giant", producing specialized, refined, distinctive and innovative parts. In addition to being widely applied in automobiles and automatic control, our products and services also provide supporting components for high-tech sophisticated products in the defense industry, aerospace industry and other fields.