Is the manufacturing of Shengpa OEM?

No, according to the query, the top ten brands are displayed on the Internet. Shengpa brand was founded in 1993. It has a number of design patents and invention patents, and has passed the ISO900 1 international quality management system certification and ISO1400/international environmental management system certification. It is not an OEM, but a brand with relevant certificates. So to sum up, Shengpa manufacturing is not OEM.