Famous brand means well-known brand with high maturity. SEAO Erhu is a product made by Suzhou SEAO Musical Instrument Company. It was established in 1989 and belongs to a national well-known trademark. It is the first choice for many erhu players and art test students. Its popularity in the playing industry is relatively high, and it keeps pace with the times with different playing methods. Many erhu instruments with different audio frequencies have been developed, so SEAO Erhu is a famous brand.