The brand of guzheng is the trademark, nameplate, some are engraved on the side panels, some are affixed,

In broad terms, the model is the standard 163cm, 21 strings, non-standard ones are based on the length. There are 70cm, 80cm, 100cm, 120cm, 125cm, 130cm 21-string, etc., and some have 13-string, 14-string, etc. In a narrow sense, each manufacturer provides each type of product based on different materials and processes. To determine a model, such as Fengyu guzheng, it is divided into different grades such as 361F and 463K according to materials and craftsmanship to distinguish various grades of guzheng.