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Plastic cannot be natural degradation caused by environmental problems

According to the purpose can be divided into several categories:
(1) cardboard for packaging, cardboard boxes, kraft paper, yellow cardboard, paperboard, impregnated divider.
(2) industrial technology using cardboard, such as fibre, bituminous paperboard used for electrical insulation, etc.
(3) building with cardboard, roofing paper, insulation Board, fireproof Board, drywall, etc.
(4) printing and decorating with cardboard, such as matrix, cardboard cover and so on. Plastic is apt to burn, produce toxic gases when burned. Such as during combustion of polystyrene to produce toluene, which few can lead to blindness, breathing symptoms such as vomiting, PVC combustion will produce toxic fumes of hydrogen chloride, in addition to combustion, is high temperature environment, can lead to plastic decomposing toxic ingredients, such as benzene, etc. Plastic is made from petroleum refining products, oil resources are limited. Waste plastic recycling plastics cannot decompose naturally. Could not be natural degradation of the plastic has been the tragedy of many animals. Like Zoo of monkey, Pelican, dolphin, animal, will errors swallow visitors readily lost of 1th, plastic bottle, last due to not digest and pain of died; looked to beautiful pure of sea Shang, go near has see, actually floating full has various of cannot for marine by accommodate of plastic garbage, in more only died seabirds sample of intestines in, found has various of cannot was Digest of plastic. How to make waste reduction, recycling is an important part. If the disposal properly, most of the domestic waste can be a renewable resource. Many people may not know that many years ago, waste treatment in Shanghai even to "the world's advanced level." Recycling system throughout the community. Today, how to improve the recycling system, promote garbage classification, as a "new" task.
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