Washington (CNN) It's become a challenge to find hand sanitizer, disinfectants and thermometers on store shelves -- and some companies are complaining that President Donald Trump's tariffs are making it even harder.

on those supplies and other products made in China to help fight the spread of the Over the past three weeks, more than 100 requests have been filed with federal trade authorities asking for relief from tariffson those supplies and other products made in China to help fight the spread of the coronavirus outbreak

Medical supplies company Glo-Med said the additional duty hits the individual hand sanitizer and dispensing unit that it sells to hospitals, according to a comment it submitted to the US Trade Representative's Office. G Mason Group, which sells hand sanitizer to national retailers and grocers, is also among those seeking a tariff waiver.

The requests extend to other health products too. Home Depot recently asked for tariff relief for thermometers and the Honest Company, which was founded by actress Jessica Alba and sells baby and beauty products, is seeking a waiver for alcohol wipes.

The duties remain active despite That's making it more expensive for suppliers to import the ingredients needed to manufacture and sell hand sanitizer in the United States, where it's been in such short supply that even All these products are subject to tariffs put in place last year amid Trump's trade war with China.The duties remain active despite a partial trade agreement struck earlier this year.That's making it more expensive for suppliers to import the ingredients needed to manufacture and sell hand sanitizer in the United States, where it's been in such short supply that even craft distilleries are getting into the business of making it

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