2020 is an important year for the high-quality preparation of the "14th Five-Year" development plan for transportation, and it is also a key year for China to accelerate the construction of a transportation power. Rail transit equipment is one of the industries with the highest degree of independent innovation, the strongest international competitiveness, and the most obvious industrial driving effect in the field of high-end equipment manufacturing in China. Under the national strategies such as "New Infrastructure" and "Belt and Road Initiative", the development of rail transit industry coincides with a good opportunity for the explosion and integration of technology concentration. With the Internet of Things, big data, cloud computing, artificial intelligence, robotics, new energy, and new materials represented by disruptive emerging technologies and rail transit, the new generation of rail transit system will enter a new stage of development!

On December 17, 2020, the "2020 China Rail Transit Industry Annual Conference" was grandly held in Nanjing, Jiangsu. The annual meeting was jointly organized by Guolian (603613.SH), Intelligent Rail Transit Media, CRRC Nanjing Puzhen Vehicle Co., Ltd., Nanjing Kangni Electromechanical Joint Stock Company, Jinchuang Group Joint Stock Company, Southwest Jiaotong University Transportation Equipment Lightweight Research Institute and other units. Nearly 300 industry insiders gathered in Nanjing, Jiangsu, to discuss the energy conservation and green future of China's rail transit industry in 2020.

This year's annual meeting held in-depth exchanges and discussions on topics such as "new materials, new technologies, green environmental protection, intelligence, full life cycle, and intelligent operation and maintenance". Promote collaborative innovation of upstream and downstream of the entire industrial chain, cross-border integration, and jointly accelerate the application and promotion of new technologies and new products, so as to comprehensively promote the high-quality development of the rail transit industry!

As a representative of a high-tech enterprise, Mr. Huang Zhibo shared the working principle and advantages of the laser cleaning equipment independently developed and produced by the company, and also shared its products: laser cleaning series, laser rust removal series, laser oxidation layer series, laser oil removal series, laser cultural relic repair series, laser paint removal series, laser glue removal layer series, laser coating coating series, intelligent laser cleaning series, laser cleaning automation solutions and application fields, and looked forward to the potential development value of laser cleaning technology in rail transit, aerospace, marine equipment, nuclear industry and other high-end equipment manufacturing and remanufacturing fields.

"Technology drives the future, innovation changes lives, and laser cleaning technology creates industrial high-end equipment manufacturing and remanufacturing value" is the corporate mission that Shengtong has been adhering to. After more than ten years of development, the company has been advocating the service concept of "green low-carbon, clean and efficient, and harmonious symbiosis". Adhere to the user-centered, every process and every link, focus on details, do not rely on shortcuts, pursue more extreme product performance and quality, and go all out every step of the way.

The urban rail transit system is an important part of the city's "new infrastructure building", and it is also a key link in the formation of smart cities in the future. Environmental protection and digitalization will be the main development trends of smart cities. Rail transit cleaning operations have also become an indispensable key link in daily maintenance. Laser cleaning plays a pivotal role in the field of rail transit maintenance.

Due to the fact that railway tracks are laid in an open-air environment, affected by factors such as rain and sunlight, the surface is prone to rust (or fouling), and when the rust layer on the rail surface and inside is serious, it is easy to cause poor rail circuit shunting, affect the transmission of railway signals, and endanger traffic safety. At present, most of the railway track maintenance uses manual grinding and large-scale rail rust removal and grinding machines, which are labor-intensive, difficult to operate, expensive, and low in work efficiency. It has a great impact on the surrounding environment of the railway track, and it is easy to damage the railway substrate. Before operation, a transportation plan needs to be submitted. The occupation of the line during on-site operation affects traffic transportation, and it is difficult to guarantee the quality of rust layer and dirt cleaning on the rails in operation.

Laser cleaning is a new type of cleaning method. Laser cleaning technology is a cleaning solution using high-frequency short-pulse laser as the working medium. The specific wavelength of high-energy beam of light is absorbed by the rust layer, paint layer, and pollution layer, forming a rapidly expanding plasma, and at the same time generating shock waves. The shock wave turns the pollutants into fragments and is removed. The substrate will not absorb energy, will not damage the surface of the object to be cleaned, and will not reduce the surface finish. The laser cleaning equipment can work alone or with the robot arm cleaning operation. The cleaning cost is low, environmentally friendly, and efficient. The cleaning effect is good, and it does not hurt the rail substrate. It gradually replaces the traditional cleaning method and can be widely used in rail transit and other fields. Rust layer dirt cleaning, its development prospect is great.

Shengtong Intelligent Laser is a high-tech enterprise integrating R & D, production and sales. It owns two laser brands "Shengtong" and "Chengjing" and a number of holding companies. It has a number of core R & D personnel from Tsinghua University, Chinese Academy of Sciences and other famous institutions, including 3 professor-level engineers. It has established long-term and stable cooperative relations with many professional laser research institutions at home and abroad, and has obtained 53 national patent technologies. It has passed ISO9001, CE, 3A and other system certifications, and has provided a series of complete laser processing solutions and related supporting facilities for domestic and foreign customers. The group has successively launched laser cleaning equipment with different power and performance, which meets the needs of daily maintenance of rail transit, and greatly improves cleaning efficiency. It plays an important role in reducing energy consumption, noise and environmental pollution.

Nowadays, Shengtong Intelligent Laser has become a global laser cleaning brand enterprise, mastering the core research and development technology of laser cleaning, with the world's leading independent research and development and production of laser cleaning equipment capabilities, through continuous self-iteration, to achieve product and service upgrades, not stuck to the status quo, to be a sustainable enterprise, in the process of continuous innovation in the future, we will use our professional knowledge, technology and innovation achievements to provide more and cleaner green environmental protection technologies for China's rail transit industry. We will always strive for the best and strive to be China's own "national" laser cleaning brand enterprise!

The wide application of laser cleaning technology in the field of rail transit has reduced pollution, saved energy, and increased speed for cities. It is essential for the construction of eco-friendly and resource-saving cities, the promotion of green and low-carbon development cities, and the construction of a beautiful China. It has brought good news to the improvement of human quality of life.

2020 is the closing year of the "13th Five-Year Plan", and it is also the foundation year to start the new journey of the country's "14th Five-Year Plan" development, and it is also a critical year to build a transportation power. Rail transit equipment, as one of the industries with the highest degree of independent innovation, the strongest international competitiveness, and the most obvious industrial driving effect in China's high-end equipment manufacturing field, under the national strategies of "New Infrastructure" and "Belt and Road Initiative", the development of rail transit industry coincides with a good opportunity for the explosion and integration of technology concentration. The disruptive emerging technologies represented by the Internet of Things, big data, cloud computing, artificial intelligence, robotics, new energy, and new materials are rapidly and deeply integrated with rail transit, and the new generation of rail transit system will enter a new stage of development. The unforgettable 2020 is coming to an end, and the promising 2021 is coming. On this occasion of saying goodbye to the old and welcoming the new, we hold the "2020 China Rail Transit Industry Annual Conference". The upcoming 2021 is the first year of the implementation of the "14th Five-Year Plan. Let us strengthen.