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From the very beginning, has been committing to providing quality products and excellent services to customers. YULI has been certified by ISO9001-2000 international quality system. To enhance the quality, YULI invested a lot for advanced machines, such as CNC grinding machine , Magnetic Inspection Equipment and Breaking Tester. s engineers keep improving the technique, craftwork, equipments and production procedures, so as to achieve lean production, provide precisely machined products accordin |