Tongda Spring Co., Ltd. - Located in the beautiful Jiaozhou Bay, the road, the sea and the air are all in all directions. The transportation is convenient, Changyi and the costal port cities are closely linked.

Tongda Spring Co., Ltd. was established in 1999. The company covers an area of 23,970 square meters, with a construction area of 10,380 square meters and 167 employees. Under the trust and support of many parties, it was absorbed by the China Spring Professional Association as a member of the Association. In 2001, it obtained ISO9001 quality management system certification. Then obtained ISO/TS16949.2009 quality management system certification in September 2008 and obtained ISO4001.2004 environmental management system certification in…