According to 2000 survey data of Hai Phong Statistical Office, shows in 3 districts have 86 large industrial plants with 50 industrial facilities use fossil raw materials, mainly coal. When it was founded, many enterprises still have space, but due to population growth, the gap between the enterprises of the residential areas are shrinking.
Lines of industrial enterprises, mainly coal and opinions fuel oil, thus causing agents air pollution is hazardous gases, such as CO2, CO, SO2, NOX and other types of industrial dust. The burning, calcining is performed on the fuel lines backward, but no measures to reduce pollution. The level of serious air pollution can be seen clearly in the industrial base, affecting the health of workers. Eg rubber factory in Hai Phong, rich slipper factory, paint company, Hai Phong cement plant. At the workshop crushed ice, dust concentrations up to 639 mg / m3, while the standard allows only 2 mg / m3 (exceeding 318 times).
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