Beijing TWT International Environmental–Protection Technology Co., Ltd, with its head office located in Beijing, China, is a high-tech international enterprise congregating all the fire-fighting products in research & development, production, sales and training. In virtue of the newest and most advanced environmental protection technology and concepts in the world, TWT independently researched and developed a series of environmental-protection technological products on top of the world. Among them, multifunctional environmental protection foam extinguishing agents, and liquid hydrocarbon evaporating suppressors, etc have obtained many national and international patents, filled the gaps of the domestic and foreign markets, and got full affirmation from concerned ministries and commissions and experts.