The report hall of the Hainan Provincial Internal Revenue Bureau has been carefully selected for professional equipment audio, and finally chose Beilarly professional audio equipment. According to the size and function of the lecture hall, the Beilarly engineer chose the K series speakers, so that the sound field of the entire lecture hall was not only evenly covered, but also the sound quality was clear and high fidelity, making the mid-range round and full, high-frequency delicate, low-frequency The dive is full of flexibility, ensuring that the sound of each corner of the lecture hall is thick and the tone is bright and prominent.