Soochow Securities Co.Ltd(601555) maintain Shenzhen Senior Technology Material Co.Ltd(300568) buy rating: diaphragm business volume rose sharply, and the performance met expectations

According to the research report released on January 28, the purchase rating of Shenzhen Senior Technology Material Co.Ltd(300568) (300568.sz, latest price: 35.49 yuan) was maintained. The reasons for rating mainly include: 1) the diaphragm volume increased in the fourth quarter, and the product structure was further optimized; 2) Increase production expansion to support long-term high growth. Risk tip: the policy and sales volume are lower than expected, and the competition intensifies.