When most people hear about the U.S. meth crisis, they picture desert labs in Mexico or rural houses in the Midwest. But the story actually starts thousands of miles away — in the sprawling industrial zones of China. There, among thousands of legitimate factories, a quieter trade has been thriving: the production and export of chemicals that can be turned into methamphetamine.
According to a 2016 report from the U.S.-China Economic and Security Review Commission, as much as 80 percentof the chemicals Mexican cartels use to make meth originally came from China (USCC.gov). Those cartels — mainly the Sinaloa Cartel and the Jalisco New Generation Cartel — supply around 90 percent of the meth that ends up in the United States. So even though the cooking happens in Mexico, the recipe starts with Chinese ingredients.
In the last few years, U.S. officials have repeatedly busted Chinese firms for shipping “ton quantities” of precursor chemicals used to make meth, MDMA, and fentanyl. Just in October 2023, the U.S. Treasury sanctioned 28 Chinese individuals and companies for doing exactly that (home.treasury.gov). And in June 2025, border agents seized 50,000 kilograms of meth precursors at the Port of Long Beach — a shipment that had come from China and was headed to the Sinaloa Cartel in Mexico (ICE.gov).
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