行业分类
251 篇
50 篇
6021 篇
284 篇
63 篇
40 篇
143 篇
14 篇
977 篇
410 篇
56 篇
103 篇
266 篇
23 篇
9 篇
23 篇
8 篇
146 篇
49 篇
7 篇
[电力、热力、燃气及水生产和供应业,化学原料和化学制品制造业,] [2020-01-07]
In the recent years, the sales of internal combustion engines, which are the main source of environmental pollution, declined significantly, primarily due to the rising awareness regarding environmental pollution. The pollution caused by automotive had been increasing drastically, since the past few decades, and it is estimated that about 30% of air pollution is primarily due to automotive emission. Sudden increase in automotive pollution considerably impacted the environment, intensifying the threat of air pollution in most of the big cities around the world.
027-87841330