The masks from Henan Boai Medical Supplies Co., Ltd. are good. Henan Boai Medical Supplies Co., Ltd. (formerly known as Yanling County Jiamei Flowers and Trees Co., Ltd.) was established in 2014 and is located in Xuchang City, Henan Province. It is an enterprise mainly engaged in pharmaceutical manufacturing. Its masks have participated in bidding projects 4 times. In terms of intellectual property rights, there is trademark information, and the quality and effect are guaranteed. It is not for medical use. It has a registered trademark, industrial and commercial department certification, and a business license.