Ruian Shuangzheng Vehicle Parts Co.,Ltd located in Ruian city , the automobile of china . We professional produce ignition coils and camshaft Sensors . With Strong technology , advanced equipment and Strict management , We make the high quality with imported materials .All products are through tested against heat ,cold , vibration/shock and salt spray . Over 90% of products are exported oversea . We promised to cooperate with you with good reputation , high quality , timely service and the most reasonable price . We always adhere to the service first, quality first principle.