Sources of air pollution from industrial activities Industrial old (built before 1975) are industrial small and backward production technology, a number of production facilities with dust, virtually no equipment handling hazardous emissions. Generally, the old industrial substandard quality of the environment. Old industry is very fragmented, due to the urbanization process, the scope of expanding cities should present the majority of this old industrial city located in the cities. For example, in Ho Chi Minh city, not to mention the defense industrial base, there are about 500 firms in total more than 700 industrial units located in the inner city, in the city of Hanoi has around 200 firms in total 300 industrial units located in the inner city. In recent years, pollution from industrial activities located within the city is somewhat reduced because the provinces have been actively implementing directive thoroughly handling establishments which cause serious pollution is interspersed in the residential areas. For example, in Hanoi construction investment infrastructure in 10 industrial clusters small suburban districts with a total land area planning 2.573ha to encourage enterprises in the urban old moved to the cluster industrial. In particular, Hanoi has rewarded the progress mode move early in the period from 2003 - 2004, the bonus from 10 million to 500 million / unit produced. So far, Hanoi has moved 10 production facilities polluting the suburbs including 10/10 Textile Joint Stock Company, Hanoi Glass Company, Thuy Khue Shoes Company ... Today 6 companies are moving the Hanoi Plastic Company, Knitting Hanoi, Dong Da Bike motorcycles, electric engineering, Knitting Long. Ho Chi Minh City has a policy of reward 500 million (the highest) for the relocation of businesses in 2002, this bonus is only 50% for enterprises displaced in 2003 and only 40 % if relocation in 2004. The province of Bac Ninh and other provinces have also invested in infrastructure to build a small number of industrial clusters to focus the business causing heavy pollution in cities and villages occupations in this industrial clusters, ...
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