1, Daqi Laser (002008): June 17, 2020 the company said on the interactive platform: the company's research and development of lithography project resolution 3- 5μm, mainly focusing on applications in the field of discrete devices, LEDs, etc., this year is expected to realize a small batch of sales. 2, Zhangjiang High-tech (600895): the company said on the interactive platform, Shanghai Zhangjiang Hao Cheng Venture Capital Co., Ltd. 2016 investment in Shanghai Microelectronics Equipment Co. 3, jingfang science and technology (603005): the company said in the interactive platform, the Netherlands photolithography machine manufacturer ASML for the company to participate in mergers and acquisitions of the Netherlands Anteryon one of the most important customers. anteryon for the world at the same time have a hybrid lens, wafer-level micro-optical device process technology design, characteristics of the material and the ability of mass production of technological innovation company, its products can be widely used in the semiconductor precision equipment, industrial automation equipment, and the company's products. Its products can be widely used in semiconductor precision equipment, industrial automation, automotive, security, 3D sensors represented by consumer electronics applications. 4, race microelectronics (300456): the company in the interactive easy platform disclosure: the company has been for the global photolithography giant manufacturers to provide lens system MEMS parts of the process development and wafer manufacturing services. ASML for the company's business partners. The company has several lithography machines in Sweden and Beijing respectively; the capacity utilization rate of the Swedish production line in 2017-2019 has been maintained at a high level of more than 80%. 5, Wanye enterprise (600641): wholly-owned subsidiary Kaisetong adopts the strategy of "one step ahead of the curve", adopts internationally competitive design concepts, and focuses on the development of FinChips for 16nm and below processes. In 2019, the low-energy large-beam ion injection machine of Kai Shi Tong was successfully relocated and entered the ion injection wafer verification stage. In 2019, the low-energy large-beam ion implantation machine of KSGT was successfully relocated and entered the ion implantation wafer verification stage. Shanghai Semiconductor Equipment and Materials Fund, a participating company, holds a 2.08% stake in Huazhuo Precision Technology. 6, Shanghai Xinyang (300236): the company said in the interactive platform, SMIC is one of the company's major customers. 2020 February, the company disclosed in the interactive platform, the company's KRF photolithography can support 96 layer 3D NAND with photoresist research, and 250nm, 130nm process process logic circuit with photoresist research. The company is accelerating the development of the third core technology - photolithography, in the integrated circuit manufacturing ArF dry, KrF thick film adhesive, I line and other high-end photoresist has been a major breakthrough. At the same time, the active layout of semiconductor silicon wafers, semiconductor wet process equipment, flat-panel liquid crystal display photoresists and other business areas. 7, Nanda photoelectric (300346): oversubscription funds to invest in "ArF photoresist product development and industrialization" project. 8, fly Kai materials (300398): the company is engaged in PCB photoresist special chemicals. 9, victory precision (002426): victory precision plans to raise no more than 2 billion yuan, invested in lithography industrialization. 10, Huat gas (688268): Huat gas is a leading specialty gas companies. 11, Fu Jing science and technology (002222): the company is the world's largest LBO, BBO crystal supplier, but also the world's important Nd: YVO4 crystal supplier, the holding subsidiary of Qingdao Hitech Photoelectric Technology Co. The company's products have been widely used by major laser companies around the world, and the company has established a good cooperative relationship with its customers, enjoying a good reputation among them and establishing a good brand image. The company's brand "CASTECH" has set up a market image of high technology, high quality and excellent service in the global laser industry, and its core products have been praised as "China Brand Crystals" by the international industry. 12, Zhiguang Electric (002169): Yuexin purchased photolithography machine from ASML in the Netherlands. Wisdom light electric indirectly hold Yue core semiconductor equity. 13, Rongda photoreceptor (300576): the company in order to expand the scope of business and product applications, investment in the establishment of a controlling subsidiary of the Shanghai core engraved micro-materials technology limited liability company to carry out the 193nm dry photoresist research and development and industrialization projects. 14, strong new material (300429): the company is engaged in PCB etching special chemicals. 15, Jingrui shares (300655): the company's photoresist products have passed the Semiconductor Manufacturing International on-line test and obtain orders. 16, light science and technology (002741): for the panel industry on the huge demand for photoresist materials, the company introduced South Korea photoresist material suppliers SMS, KISCO, DKC, some domestic customers have entered the material sampling testing and certification stage, the next step the company will cooperate with the customer to gradually realize mass production. 17, blue equipment (300293) company in the interactive platform: the company's Swiss subsidiary UCMAG is mainly for the optical and precision instruments industry to provide cleaning equipment. For precision optics, medical engineering, precision machinery, as well as PVD, CVD coating before cleaning and other typical applications requiring the highest degree of cleanliness, the company's representative products in the precision cleaning business segment UCM system can provide a full set of personalized equipment and solutions. With industry-leading technical strength, UCMAG provides cleaning equipment for key components related to the optical system of extreme ultraviolet lithography (EUV) for ASML (the Dutch lithography manufacturer Asmac) and its suppliers. 18, Jianghua micro (603078): the company's grandson company Wuxi Chenghong production of products is mainly photoresist stripping solution, is currently mainly used in the field of liquid crystal panels. 19, high alliance new material (300200): the company's main business for the ultra-clean high-purity reagents, photoresist supporting reagents and other wet electronic chemicals research and development, production and sales. 20, ao pu photoelectric (002338): the company is engaged in the main business for photoelectric measurement and control instrumentation, optical materials and grating encoder products such as research and development, production and sales. 2020 May 31 interactive platform, the company's major shareholder Changchun Institute of Optical Machines is research and development of higher level of photolithography exposure system. 21, Xilong science (002584): the company is a professional engaged in microelectronic chemicals product development, production and sales of high-tech enterprises, the leading products include ultra-clean and high purity reagents, photoresist, functional materials, lithium battery materials and basic chemical materials, etc.. Recommended 22, with the benefit of shares (300538): March 13, 2019 the company's interactive platform disclosure Bo Yan electronic investment for Bao Tong Chen Tao, the company is a R & D, the production of photoresist manufacturers, the main products for the color filter photoresist black matrix photoresist, photographic gap material, the product is widely used in liquid crystal display, printed circuits and integrated circuits, as well as printing plate. 23, Guangxin materials (300537): 2018 the company's main business products are still photoresist special chemicals, divided into photoresist photoinitiators and photoresist resin two series.