The GEM index and the Science and Technology Innovation 50 both rebounded, and the northbound funds bought a net of 12.7 billion yuan

Every reporter: Liu Mingtao Every editor: Peng Shuiping

Today's A-share rebound after opening low, the ChiNext index, the science and technology 50 once rose more than 3%, the major indexes have fallen to a certain extent in the afternoon, as of the close of the morning, the Shanghai Composite Index rose 0.73% to 2979.56 points, the Shenzhen Component Index rose 1.65% to 9196.71 points, the ChiNext Index rose 1.79% to 1780.22 points, the Science and Technology 50 Index rose 2.35% to 789.76 points, and the Beijing Stock Exchange 50 Index rose 1.07%. The half-day turnover of the market was 674.63 billion yuan, and the actual net purchase of northbound funds was 12.698 billion yuan.

In terms of liquidity, the central bank announced that in order to maintain stable liquidity at the end of the month, a 7-day reverse repurchase operation of 117 billion yuan was carried out in the form of interest rate bidding on February 29, and the winning interest rate was 1.8%. Wind data shows that 58 billion yuan of reverse repurchase expired on the same day, so the net investment in a single day was 59 billion yuan.

On the news side, on February 29, the National Bureau of Statistics released the "Statistical Communiqué of the People's Republic of China on National Economic and Social Development in 2023", saying that preliminary calculations show that the GDP in 2023 will be 1260582 billion yuan, a year-on-year increase of 5.2%, final consumption expenditure will drive GDP growth by 4.3 percentage points, gross capital formation will drive GDP growth by 1.5 percentage points, and net exports of goods and services will drive GDP downward by 0.6 percentage points.

NVIDIA's latest high-end H200 chip will start shipping in the second quarter, and the four major cloud service providers are actively competing to cope with the huge demand for AI computing.

In terms of plates, the semiconductor industry chain broke out, the lithography machine led the rise, Aopu Optoelectronics, Fujing Technology, Yaxiang Integration, Baicheng shares and other daily limits, the concept of hydrogen energy was active, and New Power, Guolin Technology, and Hongtao shares also rose to the limit. The tide of high-level stocks ebbed, Guomai Culture fell to the limit, and Huayan Precision Machinery, Claus, Huayang Lianzhong, etc. fell sharply.

Lithography machine is the core equipment of semiconductor manufacturing, its performance directly determines the process level of the chip, the development is difficult, the value is high, the market scale is considerable, the current market mainstream lithography equipment has i-line, KrF, ArF, ArFi, EUV five categories; Yield is the core index of the lithography machine, among which, the resolution directly determines the process, the ultimate resolution level is the unremitting pursuit of the lithography machine industry, is the most important indicator of the lithography machine, and the overlay accuracy affects the yield, and the yield affects the production capacity and economy of the lithography machine. In addition, multiple exposure technology can further improve the chip manufacturing process while the resolution of the lithography machine remains the same, and it is widely used.

In addition, the development of lithography machine is difficult and the industry monopoly is strong, which is the hardest hit area of overseas semiconductor sanctions against China, which directly affects the development of advanced processes in the domestic semiconductor industry, so the importance of independent breakthroughs in lithography machines is particularly prominent, and the domestic industrial chain of lithography machines has great potential.

Here, by integrating the latest research report information of a number of brokerages, we bring 4 company profiles to fans and friends, for reference only.

1. Xinlai should be used

The localization of semiconductor parts has entered a critical period and a deep water area, and the company has been deeply involved in this track for many years, and the expansion of superimposed product categories is expected to open up a new space. (Huafu Securities) 

2. Aopu Optoelectronics

In recent years, Optoelectronics has achieved rapid development through the model of "in vitro incubation of Changguang Institute + epitaxial mergers and acquisitions of listed companies". The demand for aerospace composite materials is strong, high-precision grating rulers and encoders, and industrial-grade CMOS image sensors have deeply benefited from domestic substitution, and the company has entered a performance inflection point. (Huaxi Securities) 

3. Shanghai Xinyang

The company's self-developed KrF photoresist continues to pass the certification of customers and has been supplied to domestic mainstream wafer manufacturers, and ArF photoresist is currently in the client certification stage. In terms of polishing slurry, at present, the polishing slurry of the mature SiO2 system has successfully entered the client and achieved sales, and some products of the CeO2 system have been tested on the customer's production line, with good performance, and the company's second and third growth curves are gradually taking shape. (Kaiyuan Securities) 

4. Aisen shares

Based on the electroplating solution and supporting reagents in the field of traditional packaging, the company has occupied the position of the main supplier of electroplating solution and supporting reagents for traditional packaging in China, and has developed along the industrial chain to other application fields, and has gradually covered the electroplating process links in the fields of passive components, PCB, advanced packaging, wafer manufacturing, photovoltaics, etc., and at the same time cut into the lithography link through photoresist and supporting reagent products, related products will further improve the breadth of the company's product line coverage, further open up the growth space, and the revenue scale is expected to continue to expand. (Ping An Securities) 

National Business Daily