Liben Spark Plugs are one of the world’s leading spark plug manufacturers based in China and we would like to supply you with good quality spark plugs with good prices and good service. All of our spark plugs are under the ISO Quality Management System with the highest level certificate of ISO/TS16949 in the spark plug industry. If you are in need of spark plugs, or interested in spark plug business, please contact me for good business. FREE SAMPLES can be sent for your evaluation!