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Liangshan Darong Traffic Mechinery co.,ltd. is a professional manufacturer of semi-trailer fittings located in Liangshan, Shandong province. We untilize the latest technology to ensure cost efficency for our customers and we specialize in the supply of special spare parts for semi-triailers in the Asian market as well as semi-trailer BPW/American axle assembly,axle tube, the single point suspension ,tandem pendel axle series,spoke axle series,outboard/inboard drum axle series for international markets.We are developing and expanding gradually and all our products have sold well at home and abroad based on 10 years of research and manufacturing in the fileld. Through many years of research and development experience, our factory has accumulated vast knowledge in the industrys technological aspects. We have 30 specific products among 6 major varieties of our RSC brand, including axle, BPW/American axle assembly, the single point suspension systems, outboard/inboard drum axle assembly ,spoke axle assembly and other special car accessories.Our technology and qulity adheres to national standers and we are one of the leaders in the field. We have aslo attained ISO9001 international quality system certification.Our advanced manufacturing methods,comprehensive testing system,strict quality standers and excellent after-sales service have enabled us to become a respected brand. We adhere to the policy of quality first,customer foremostand we strive to provide complete service for our customers. We welcome customers old and new to vist our company and discuss bussiness with us.