Consumer electronics companies and technology groups are sounding the alarm that additional tariffs on imports from China will hamper U.S. innovation — and give foreign competitors an edge.

In public hearings on the next round of potential tariffs on $300 billion in Chinese goods, the companies urged trade officials to exclude their products from additional tariffs.

Roku, iRobot, Best Buy, Element Electronics and the Entertainment Software Association all testified on Monday.

Colin Angle, the CEO of iRobot, said his company is already feeling the impact of tariffs on its robotic vacuums. He said slapping additional tariffs on its robotic mops and lawnmowers will “exacerbate” the harm being done to the company.

Angle says iRobot will have to raise prices again, which will slow sales and ramp up uncertainty. The company will not be able to increase its research and development spending, which he says will undermine iRobot’s ability to maintain an edge over its Chinese competitors.

“Imposing these tariffs will bring disproportionate harm,” Angle said.

While the companies agreed on the administration’s goal in cracking down on unfair trade practices like forced technology transfer and intellectual property theft, they argued tariffs won’t necessarily help the situation.

Best Buy’s Chief Merchandising Officer, Jason Bonfig, told the officials the proposed tariffs consumer electronics would have “minimal impact on China,” but “will only serve to maximize pain on U.S. consumers.”

Best Buy is asking the office of the United States Trade Representative to exclude smartphones, smartwatches, fitness trackers and other consumer electronics from the next round of tariffs.

Bonfig argued that while some consumer electronics manufacturing has been moving outside of China, it’s a “multiyear effort” and cannot be done any faster, “even in the face of additional, onerous tariffs.”

Damage to US innovation

Roku told the panel there was no valid reason to target Roku products. Mustafa Ozgen, a Roku vice president, said the company has arrangements with its manufacturers that protect its intellectual property — and he says those agreements are working well.

He said 25% tariffs will lead to a decline in Roku’s sales and will ultimately have a detrimental impact on American leadership in the technology space.

“Targeting Roku is not going to help U.S. manufacturing, but almost certainly hurt U.S. innovation,” said Ozgen.

The Entertainment Software Association also said tariffs on video game consoles, controllers and other accessories will drive up prices — which will slow the adoption of new technology by consumers, and eventually mean less money to invest in research and development.