It will pollute the air in the manner of dust, gas and vapor from the fuel used by chemical flux insulated fire-resistant coating or plastic burning and metal becomes vapor, so. Elements of air pollution occurs. In addition to having a smoke particulate and toxic substances similar to burning, there is also a direct gas group nitrogen oxide (NOx) from the reaction of nitrogen at high temperatures. Substances from the reaction that occurs (for example, sulphur dioxide, chlorine gas, Thailand, etc.), and particles containing metals (such as lead, copper, Thai, cadmium, zinc, nickel, etc.).
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