Mobile phone manufacturers are increasing their focus on folding screens, and new models are being released intensively; The continuous improvement of display materials and technology, and the integration and reshaping of the industrial chain... According to the quarterly tracking report of mobile phones released by International Data Corporation (IDC), the shipment volume of folding screen products in China remained stable in the first quarter of 2023, with a year-on-year increase of 52.8%. Although the mobile phone industry has faced pressure from various aspects such as demand since the beginning of the new year, it has firmly adhered to the high-quality line, continuously strengthened its strength, and made efforts to break through various aspects of the industry through innovation, increasing investment in the mid to high end market and deepening its layout. Folding screen popular mobile phone manufacturers compete for mid to high end vivo. Two folding screen phones, X Fold2 and X Flip, were recently launched in the market, with sales leading online platforms such as Tmall and JD.com on the day of their first sale; After the release of the OPPO foldable screen mobile phone Find N2 series, the market performance was strong, with 357000 units shipped in the first quarter; Huawei has released a new generation of foldable screen phone Mate X3, with a slimmer body and continuous breakthroughs in display technology... Since the end of last year, major domestic mobile phone manufacturers have launched new products with foldable screens. As more and more mobile phone brands enter the field of foldable screens, the iteration speed of foldable screen products within the same brand is also accelerating, reflecting the rapid development of this segmented market. The domestic mobile phone industry has entered a period of stock, with a shift from pursuing quantity to pursuing quality being a characteristic of the stable development of the industry. Manufacturers urgently need to aim for upgrading needs, seize breakthrough changes, and stand out from fierce competition. "Zhong Xinlong, a senior consultant at the Future Industry Research Center of CCID Research Institute, believes that as a" collection "of smartphones and tablets, foldable screen phones have expanded the usage scenarios of large screen displays, The upgraded appearance has created a differentiated form and become a new driving force in the industry. Currently, mainstream domestic mobile phone manufacturers are laying out a "race track" of foldable screens, and the densely released new models provide consumers with more choices, continuously driving the popularity of the foldable screen mobile phone market. According to IDC data, in the first quarter of 2023, the shipment volume of folding screen products increased by 52.8% year-on-year, and the share of vertical folding products increased to 44.3%. It is expected that the domestic folding screen mobile phone market will maintain rapid growth in 2023. OPPO Senior Vice President and Chief Product Officer Liu Zuohu believes that foldable screen phones reflect manufacturers' exploration of higher technology and brand value. Consumers pay more attention to quality and experience, which also gives the high-end market greater growth potential. The competition for the mid to high end market is a reflection of industrial optimization and upgrading. The "hot" trend of increasing research and development investment in the industry chain towards more mature foldable screen phones cannot be separated from the support of technology and industry chain. Zhong Xinlong told reporters that hinges and foldable screens are the two core technologies that distinguish foldable screen phones from straight panel phones. The former is related to the depth of screen creases, the lightness of the body, and so on. The latter directly affects the display effect and consumer experience. Since the introduction of foldable screen phones, mobile phone manufacturers have never stopped exploring "eliminating creases" and "reducing weight and slimming", and have continuously promoted innovation and upgrading in technology, materials, processes, and other aspects in this process. Introducing high-strength composite carbon fiber materials to make hinges lighter, narrower, and stronger; Through tenon