The Commerce Department found on Friday that four large Chinese solar panel manufacturers are avoiding longstanding U.S. tariffs by assembling their products in Southeast Asia before importing them to the country.

BYD Co., Canadian Solar International, Trina Solar Science & Technology and Vina Solar Technology violated U.S. trade laws by finishing their products in Vietnam, Thailand, Cambodia and Malaysia, according to a department press release. The probe was launched in March after California-based solar company Auxin Solar alleged that some solar firms were circumventing tariffs on China by completing manufacturing in Southeast Asia. (RELATED: Biden Taps Oil From Communist Dictatorship After Rejecting Cleaner Fuel From US Ally)

“Although these decisions are preliminary and the proceedings remain ongoing, Commerce’s investigations have largely validated and confirmed Auxin’s allegations of Chinese cheating and we are grateful to the professional staff at the Commerce Department for their diligence and professionalism,” Auxin CEO Mamun Rashid said in a statement provided to the Daily Caller News Foundation.

The tariffs, which are called “antidumping and countervailing duties,” are intended to offset the foreign government subsidies which allow foreign companies to sell their products for a lower price and force domestic firms out of business, according to the Commerce Department’s website.

President Joe Biden declared an emergency under the Tariff Act of 1930 that exempted solar companies from import duties that are designed to protect U.S. businesses from unfair competition. Vietnam, Thailand, Cambodia and Malaysia are responsible for 80% of U.S. solar imports, according to Reuters.

China dominates solar panel manufacturing and is responsible for 80% of polysilicon production, a key input in most solar panel designs, according to an International Energy Agency report. In August, U.S. customs officials began to enforce the recently implemented Uyghur Forced Labor Prevention Act (UFLPA) to ban imports from the Xinjiang region, an area in Western China where polysilicon is produced.

The Biden administration wants to generate all of the country’s electricity from green energy, such as solar or wind power, by 2035, up from just 40% in 2020. To achieve this objective, the yearly rate of solar installations may need to more than double, according to the Energy Department.

The Democrats’ climate spending bill gives billions in subsidies and tax credits to help expand domestic solar panel manufacturing.

The Commerce Department and the solar manufacturers did not immediately respond to the DCNF’s request for comment.

All content created by the Daily Caller News Foundation, an independent and nonpartisan newswire service, is available without charge to any legitimate news publisher that can provide a large audience. All republished articles must include our logo, our reporter’s byline and their DCNF affiliation. For any questions about our guidelines or partnering with us, please contact licensing@dailycallernewsfoundation.org.