ERG is considered one of the leading manufacturer of air and gas compressor products in Shanghai, China. ERG has 23 branches and subsidiaries with over 500 employees. Our goal is to provide exceptional customer service coupled with quality products and energy saving solutions.ERG's primary businesses focus in following key areas: 1. Oil-injected rotary screw compressors (Belt driven and Direct driven. Fixed speed and Variable speed. High, Normal and Low pressure)2. Portable air compressors (Diesel-powered and Electric motor powered)3. Oil free air compressors (Dry type, Scroll type and Water-lubricated type)4. Centrifugal compressors5. Gas Compressors6. Vacuum pumps7. Heat pumpsAt ERG, we earn our customers' trust and satisfaction by manufacturing the superior quality compressed air and gas products for all industries. All of our products are designed for reliable performance, easy maintenance, and maximum energy efficiency. ERG has been exporting to more than 150 countries across the globe. We have the largest international sales and service team in China compressor industry. Our well-trained and motivated staff who can speak English, Spanish, French, Russian and Arabic offers expert advice and assistance for all challenges. ERG continuously innovates product development and management to meet customers' demand. The powerful enterprise culture and continuous innovation make DENAIR improved rapidly to reach the business principle "Energy Saving First, Mutual Value Shared". ERG's vision is to be a world-renowned high-end energy-saving machinery brand, with sustainable development, constantly improving its own value and sharing it with our customers and staff, committed to continuously satisfy the needs of global companies by providing a full range of industrial gas and air compression solutions.