COVNA Corvina Group Co., Ltd. Headquartered in Denver, Colorado, USA, it is a professional manufacturer of flow control and automation equipment accessories such as automatic control control valves, pneumatic valves, electric valves, solenoid valves, etc., integrating R&D, design, sales and service, COVNA, as one of the major suppliers of services to the world industry, has many well-known enterprises and well-known brands. Over the years, as a "high-tech enterprise", Keweina has been recognized for its excellent product quality, strong brand effect and independent and self strengthening innovation spirit, and has won honors such as "China's Independent Innovative Products", "China's Recommended Brands for Engineering Construction", "Guangdong Famous Brands", and "Key Promotion Brands". At present, our products are exported to more than 100 countries and regions, and are widely used in more than 10 industries and fields such as automation, environmental protection, water treatment, oil, natural gas, chemical industry, power, metallurgy, shipbuilding, mining, paper making, medicine, industrial systems, etc.