1.TS16949:2009 certificated; 2.18 years gearbox shaft supplier;3. mainly exported to United States; 4.more than 400 workers; Ningbo tiansheng shaft co.,ltd, founded in 2001, is specialized in the production of high precision axis and trailer accessories (jacks, couplers, mechanical winches), the company covers an area of 25000m ²,building area 18000 m², the fixed asset is more than 30,000,000 ...