On August 7, 2018 the United States Trade Representative (USTR) announced that 25% duties will be assessed against $16 billion worth of imports from China beginning August 23, 2018. This list of 279 HTS numbers is in addition to the HTS numbers that became subject to 25% duty on July 6.
This link is for an excellent overview of the various U.S. Tariff actions currently proposed and in effect, along with advice regarding actions that importers can take to apply for exclusions.
Please reach out to your Customs Brokerage representative for detailed information as it pertains to your product!