Indoor environmental protection, a new industry with a critical well blow-out, is a human tragedy of indoor pollution that is imminent. As the heat of urban renovations continues to rise, the problem of indoor environmental pollution caused by renovations (construction materials, furniture, furnishings, etc.) has become more acute, seriously affecting the physical and mental health of the population and even endangering life. At present, more than 70 per cent of the country's households are overstretched, and 34 per cent are seriously overstretched by 16-40 times. On the other hand, the household green product usage rate is less than 0. 03 per cent, and the total market size of our indoor environmental clean-up industry in 2006 was as high as 20 billion dollars. People say that life is good and new houses are available, but they dare not. Ninety per cent of the time is spent indoors, working, learning, resting, especially for the elderly and children, with low resistance and immunit...