Bidragon Group is engaged in manufacturing and exporting steam boiler, hot water boiler and thermal oil heater, during the past manufacturing process, our technical team reach and developed more than 10 patents for increasing boiler heating efficiency, Take thermal oil heater for example, out technical team design coil tube on boiler top and which design increases our thermal oil heater's thermal efficiency higher more than two points than the common oil gas fired thermal oil heater, which technical update is highly appreciated by customer at home and oversea.Beijing Double Dragon International Industrial & Mining Machinery Co., Ltd. is authorized by the Chinese Foreign Economy and Trade Committee, with independent import and export rights. Many years' experience on foreign trade helps us provide the best service for foreign customers.We Bidragon have cooperated with many Grade-A boiler manufacturers and research enterprises. Furthermore, we are extending product function constantly and improving product performance by absorbing advanced experience at home and abroad. We Bidargon are professional in selling the state-of-the-art technology boilers with high thermal efficiency and adopting renewable clean energy, which is not only environment friendly but also help customer save operation cost.We supply Grade-A Boiler Manufactures product. According to customer's requirement, we can supply oil fired boiler, gas fired boiler, biomass (wood pellet, wood chip, wood dust, corncob, bagasse, rice husk, palm kernel shell) boiler, electric boiler, coal fired boiler, coal-water slurry boiler, heat recovery boiler and so on. Our products own ISO9001 qualification system. What's more, we have got the SGS certificate, BV certificate and CE certificate. The designed boiler lifespan can reach 20 years.We are dedicated to global market. Nowadays, we have exported boilers to more than twenty countries, such as Europe, Middle East, Southeast Asia, and Africa. During the past years, our company is developing quickly and stably at the annual growth speed of 100%. We sincerely welcome all customers to contact and visit us to build long-term business relationship.Bidragon mission We are responsible for your choice!