Zhengzhou Windbell Explosion-Proof Technology Co., Ltd (referred to as "Windbell EX") is a wholly-owned subsidiary of Zhengzhou Windbell Network Technology Group Co., Ltd. (referred to as "Windbell Group"). Windbell Group is located in Zhengzhou High tech Industrial Development Zone, covering an area of nearly 100 acres. It has a total area of 10000 square meters of research and development and office buildings, as well as a standardized production plant with a total area of 20000 square meters. Each company of Windbell Group actively carries out product technology research and development, and has obtained over 200 independent intellectual property rights such as technology patents, computer software copyrights, and proprietary technologies.Windbell Group maintains long-term scientific research cooperation with Sinopec Sales Co., Ltd., Sinopec Qingdao Safety Engineering Research Institute, PLA information engineering University, Jinan Military Region Logistics Oil Department, Beijing Academy of Environmental Protection Sciences, etc. Based on years of industry experience and solid technical foundation of the group, Windbell Explosion Protection is committed to developing into a professional manufacturer of explosion-proof equipment. It provides professional equipment and system integration solutions for petroleum, petrochemical, automation, information technology, and intelligent engineering projects, including instruments and meters, communication equipment, computer network equipment, and management systems suitable for customer needs. Each company of Windbell Group has participated in the formulation and revision of multiple national standards, mainly including the "Explosive Atmospheres" (GB 3836) series standards, "Non electrical Equipment for Explosive Gas Atmospheres" (GB 22586-2010), "Explosion proof Safety Technology for Fuel Gas Stations" (GB 22380) series standards, "Design Code for Oil and Gas Recovery Facilities in Petroleum Loading Systems" (GB 50759-2012) Technical Requirements for Explosion Protection of Oil and Gas Recovery Systems (GB/T 34661-2017), "Leakage Detection Systems" (GB/T 30040-2013) series standards, "Technical Standards for Anti Leakage Renovation Engineering of Oil Tanks in Service at Gas Stations" (GB/T 51344-2019), etc.