Founded in 2007, Shenzhen GBA Oxy-Tech Co., Ltd. specializes in manufacturing high quality contract and oxygen concentrator. Our factory is located in Shenzhen City, Guangdong province, occupying nearly 12,000 square meters totally with 100 well-skilled workers. Since the establishment, we have built a professional technical group for quality control and innovation development. With the powerful management and QA & QC team, we always provide high quality products without shipment delay to meet the demands of the market. Lovego. Go along with Lovego!