Weeks after more than doubling tariffs on fasteners imported from China, President Donald Trump imposed a 10% tariff on $300 billion in Chinese imports starting September 1. The new tariff applies to all iron and steel nut imports (HTS subheading 7318.16.00) from China, as well as iPhones and most consumer goods.

The National Association of Manufacturers CEO Jay Timmons said the new tariffs have “the attention of manufacturing workers in the U.S. and their families who are feeling the negative impact of the current tariffs and will be made even less competitive with this new tax on trade.”

China’s fastener exports to the U.S. dropped 26% in the first four months of 2019, Fastener World reports. China exported 225,480 tons of fasteners to the U.S. in the first four months of 2019, according to Fastener World. The average fastener export value rose 6.3% to $1.86/kg.

Trump hiked 10% Section 301 tariffs on $200 billion of fasteners and other select goods manufactured in China to 25% on May 10. In response, U.S. fastener importers raised prices. Importers also are looking to source fasteners from other countries.

Trump’s original 10% duty on fasteners from China was applied September 24, 2018.

The Office of the U.S. Trade Representative (USTR) announced a tariff exclusion request process for Section 301 tariffs in July. USTR will accept exclusion requests until Sept. 30, 2019. Any exclusions granted will be retroactive to Sept. 24, 2018, when the duties were first put in place. The exclusion will last for a period of one year after it has been granted.

To submit a Section 301 exclusion request, requesters must first register on the portal at http://exclusions.USTR.gov.