Regarding various emission standards
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Those working in environmental protection often come across various emission standards, but it seems that the standards vary from place to place and from industry to industry. It’s unclear where these standards originate from, and where one can find the latest versions of them.
The latest regulations and standards can be obtained on the **Ministry of Environmental Protection’s Science and Standards website: http://www.mep.gov.cn/tech/index.htm
Check the websites of the Ministry of Environmental Protection and local environmental protection bureaus; they are also available in bookstores. It’s essential to know the standards if you’re working in the field of environmental protection
**The latest standards are generally available at standard bookstores or can be found online. Local standards can be found at the local environmental protection agency.