Small chemical industry generally refers to chemical enterprises with relatively small production capacity and scale.
Basic chemical industry is generally large chemical industry, and fine chemical industry is generally small chemical industry.
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In modern Chinese, chemical industry, chemical engineering and chemical technology are all called chemical engineering for short. They appear in different historical periods and have different meanings, but they are closely related and penetrate each other.
In people's minds, the word "chemical industry" has habitually become synonymous with a general knowledge category and occupation. Its significance in national economy and engineering technology has aroused people's extensive interest, attracted thousands of people and sacrificed their lives for it. The following briefly explains the rich and colorful contents and important contributions of the chemical industry from all aspects of human social life.