GUANGZHOU HEARTEN AUTO PARTS CO,LTD. places great importance on raw materials used in the manufacturing of engine piston rings-small engine piston rings by size. Each batch of raw materials is selected by our experienced team. When raw materials arrive at our factory, we take good care of processing them. We totally eliminate defective materials from our inspections.. To expand our HEARTEN brand, we conduct a systematic examination. We analyze what product categories are suitable for brand expansion and we make sure these products can offer specific solutions for customers' needs. We also research different cultural norms in the countries we plan to expand into because we learn that foreign customers' needs are probably different from those of domestic.. Our dedicated and knowledgeable staff have extensive experience and expertise. To meet the quality standards and provide high quality services at HEARTEN AUTO PARTS, our employees participate in international cooperation, internal refresher courses, and a wide variety of external courses in the areas of technology and communication skills..