A worker produces medical N95 masks at a mask production company in Southwest China's Chongqing, Feb 17, 2020. (PHOTO / XINHUA)

WASHINGTON - The US Trade Representative's office said it granted on Thursday exclusions from import tariffs for some medical products imported from China, including face masks, stethoscope covers and blood pressure cuff sleeves.

READ MORE: China responds positively to US tariff exemption lists

The exclusions were granted as the United States grapples with a coronavirus outbreak that threatens to strain its healthcare system.

Earlier this month, USTR granted exclusions for other Chinese medical products, including hand sanitizing wipes and examination gloves.

ALSO READ: New lists of US goods exempted from additional tariffs unveiled

The products were included in a fourth round of tariffs on Chinese goods imposed by US President Donald Trump on Sept 1, 2019, amid heated US-China trade negotiations.

The tariff rate on the medical products was initially set at 15 percent, but was lowered to 7.5 percent on Feb 15 as part of the Phase 1 US-China trade agreement. The deal leaves in place tariffs on about US$370 billion worth of imports from China, including 25 percent duties on goods valued at around US$250 billion.