What grade does banana tree underwear belong to?

Middle and high grade.

Banana tree brand is a well-known trademark in China, and its products are of high quality. It's a high-end product. Brand underwear is comfortable and breathable, especially marked as non-inductive, comfortable and breathable, and sweat-wicking and breathable. Banana has a variety of flexible supply chain working ability and independent research and development ability, integrates enterprises to acquire global high-tech property rights, and has a variety of chemical fiber fabric technology patents. The design scheme is concise and intuitive, highlighting customer realism and attaching importance to discipline, and has strong expressiveness and application.