According to CSC FINANCIAL CO.,LTD 's research report, the revenue, net profit and non-return net profit of double-ring transmission (002472.SZ) in the first half of the year increased by 18.99%, 46.84% and 47.45% respectively compared with the same period last year. The company's performance growth is mainly due to the rapid expansion of robot reducer business, the good growth of heavy truck automatic gearbox gear business, the steady rise of new energy vehicle gears, the continuous promotion of internal cost reduction and efficiency and independent innovation. The company's products have a broad market prospect in the field of commercial vehicle automatic gearbox, the variety of products in the field of robot reducer continues to expand, and the performance increases significantly in the future. The company currently has plenty of orders on hand, actively expanding production capacity, and performance flexibility is about to be released. Give a "buy" rating.