Brand UNIAIR N95 mask is a long-history brand which is owned by San Huei United Co., Ltd. Over the year, San Huei United Co., Ltd has been devoted to researching and producing premier mask. Most famous models are UNIAIR SH3500 N95 face piece in folding shape and UNIAIR SH2500 N95 face piece in cup shape. These masks have gained certificates of approvals by US CDC NIOSH, China’s GB standard. Its masks are popular among United States, Canada and so on.