Yes Hongyuan Waterproof Technology Group Co., Ltd. is a brand of waterproof system supply, whose trademark was applied in 1998. It is a professional brand of waterproof system supply integrating scientific research and development, production and sales, and construction services. Among them, Hongyuan Chemical Plant will generally cause dizziness, nausea and vomiting, chest tightness and other hazards to the human body. Chemical plants will produce a lot of chemical raw materials, which are very harmful to human body, such as harmful gases, harmful water and harmful bacteria.