Ningbo Jiaerling Pneumatic Machinery Co., Ltd. is a professional pneumatic components manufacturer. We take the lead in passing ISO9001 quality and CE certificate. JELPC is the member of China Hydraulic and Pneumatic Seal Industrial Association.We have more than 30 national invention patents. JELPC supplied valves of water supply and drainage system for the Bird's Nest Stadium and the Water Cube Aquatics Center in 2008 Beijing Olympic Games and environmental recycling system for 2010 Shanghai World Exposition.