Founded in 1985, Lehai Musical Instrument Co., Ltd. is one of the enterprises with the largest production scale, technical strength and comprehensive strength in China's national musical instrument manufacturing industry. It has two major brands, "Lehai" and "Xinghai", of which the "Lehai" trademark has been rated as "China's well-known trademark". On the basis of inheriting the fine tradition of Chinese national musical instrument production, its products have obtained a number of national patents in combination with modern development technology. Lehai hired two famous production masters, "Northern School" Lv Jianhua and "Southern School" Ren Jianyi, to guide the erhu production process, and according to the characteristics of the north and south of the erhu, carried out reform and improvement, and developed a new product combining the north and the south, "Jia Tianxia" series of high-quality erhu, which was well received by the performers, and provided professional pianos for the concerts of the performers for many times. The recommended model is 723-1DZ, hexagonal mahogany erhu, fine workmanship and pure timbre, the price is about 800 yuan, which is the first choice for beginners.