Pharmaceutical intermediates are actually some chemical raw materials ｏｒ chemical products used in the pharmaceutical synthesis process. This chemical product does not require a production license for a drug, and can be produced in an ordinary chemical plant. As long as it reaches a certain level, it can be used for the synthesis of drugs. China needs about 2,000 kinds of raw materials and intermediates for chemical industry each year, and the demand is over 2.5 million tons. After years of development, chemical raw materials and intermediates required for the production of pharmaceuticals in China can be basically matched, and only a small part needs to be imported.