In addition to conventional reciprocal tariff measures, the US has targeted specific export sectors in China through anti-dumping and countervailing duties. After reducing the overall tariff rate on Chinese goods from 145% to 30% on May 12, within a little over a month, numerous Chinese products, including solar cells, thermoformed fiber products, float glass, erythritol, graphite, and silicon used as active anode materials, were successively placed on the US Department of Commerce's "blacklist". The anti-dumping and countervailing duty rates were extremely high, almost amounting to a de facto market blockade. Recently, the US Department of Commerce has initiated or increased related tariffs on six major categories of Chinese goods exported to the US, with tariff rates generally ranging from 86.24% to 504.07%, and reaching as high as 1157.53% for individual enterprises.