Ⅰ.Performance description: 1.The product is suitable for clinical examination, diagnosis, surgery and maternal delivery in obstetrics and gynecology. 2. The ordinary delivery bed is composed of back board, hip board, base, and auxiliary table. 3. The rack transmission mechanism is controlled by the handwheel, which can make the back and hip board fold up and down respectively; The folding up and down of the auxiliary table is adjusted by the ratchet frame mechanism, and the auxiliary table is