What are **chemicals? How many categories are there in total?

2015-09-21View Original

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What are **chemicals? How many categories are there in total?

Reply #22015-09-21

Download the **Chemical Catalogue (2015)** and **Chemical Information Sheet** from the General Administration’s website.

Reply #32015-09-23

**For chemicals, you can just check the 2015 edition of the catalog! It is classified into several categories; originally there were 8 such categories, but the new national standard from 2009 divides it into more than ten categories. However, this new standard has not been put into practice, so we should still use the 8 commonly used categories!

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