The equipment exported by Rifa Precision Machinery to Latvia-CNC bearing ring grinding super-precision automatic line (8 lines) passed customer on-site trial grinding and testing during the period from February 26 to March 6, 2014, and various machining accuracy indicators The accuracy of the actual measurement is better than the requirements of the technical agreement signed by both parties. The geometric accuracy of the equipment assembly meets the requirements of the company's internal quality control system, that is, the product delivery certificate. All equipment has passed the pre-acceptance at one time.