pollution of steel

When i watched a video called China Revs Up, a scene showed the pollution from steel. The steel industry is very important in China. Half of the Chinese economy depends on the steel industry. Capital Steel is the third largest producer in China. It's located in Beijing. This company has an important position in China and the output of this company is very high, but a disadvantage of this company is the pollution in Beijing. The environment of Beijing is very bad. Therefore, the government ordered Capital Steel to improve the equipment of pollution control. Capital Steel follwos the government and ameliorates the equipment.
I think the government is right. When i came to Beijing seven years ago, i could not see the blue sky. The sky was gray and the river looked black and smelled nauseating. Then i saw some newspapers in Beijing and they said: the rain became acid rain and the acid rain could erode some culture relics. The pollution was very terrible and dangerous. One day, i was seeing City New, and they said the reasion of the pollution was from Capital Steel. Last year, i went to Beijing again, and the environment was better. there are many green plants in the city. I think there are 2 reasons for the change. First, Beijing will hold the Olympic Game in 2008. We cannot show a bad environment to foreign people. Second, a bad envirnment is bad for people's health. Many people of Beijing were ill because of pollution. The government must improve the envirnment for people's health. Whatever, we must protect this place which we lived.