Commercial truck and bus tires imported from China are benefitting from subsidies from the Chinese government, and as a result the U.S. Department of Commerce says those tires should be subject to tariffs up to 23.38%.

The DOC issued its preliminary determination June 28. It studied data from two importers: Double Coin Holdings and Guizhou Tyre Co. Data from those companies then is used to calculate one tariff rate for all the other companies that ship products from China to the U.S.

For Double Coin the DOC is levying a tariff of 17.06%. The rate is 23.38% for Guizhou. All other importers will be assessed a rate of 20.22%.

These figures represent only one half of the overall tariff equation. The DOC also is investigating whether the imported products are being dumped in the U.S. at prices below the cost of manufacturing. The dumping investigation continues, and ultimately an anti-dumping tariff will be added to these preliminary countervailing rates. A preliminary decision in the anti-dumping case is due Aug. 26.

Final rulings in both the countervailing and anti-dumping investigations are due Nov. 10, 2016.

The DOC also found that critical circumstances exist “with respect to one exporter of truck and bus tires from China.” As a result, U.S. Customs and Border Protection will collect the duties retroactively for Guizhou dating back to 90 days prior to the publication of this ruling in the Federal Register.