Profile: Ruian Atop Industrial Co. Ltd. is a manufacturer of mechanical and electrical products. We are an ISO 9001 certified company. Our product line includes oil free motors, silent oil free air compressors, air driers, whistle box and vacuum pumps. Our low noise air compressor TP series is used in manufacturing, experimental analysis, science and communication industries. Our whistle box uses mineral cotton to absorb noise. Our products are scientific in design, and more gas can be produced per unit of power.