The production process of metal refrigerator magnets generally includes the following steps: 1. Design: Use computer-aided design (CAD) software or hand-drawing to design the pattern and shape of the refrigerator magnet. 2. Material selection: According to the design requirements, select suitable metal materials, such as zinc alloy, aluminum alloy, etc. Mold making: Use CNC machining or EDM technology to make the mold. 3. Die casting: Heat the metal material to liquid state, then inject it into the mold, and press the metal material into shape through the pressure of the die casting machine. 4. Drain: Remove the die-cast refrigerator magnet from the mold, remove the drain and excess metal material. 5. Polishing: Use a polishing machine to polish the refrigerator magnet to make its surface smooth and bright. 6. Electroplating: Electroplating the polished refrigerator magnet, such as chrome plating, zinc plating, etc., to increase its surface gloss and corrosion resistance. 7. Coloring: Use spraying, silk screen printing or pad printing technology to color the refrigerator magnet to present the desired color and pattern. 8. Quality inspection: Check the quality of the colored refrigerator magnets to ensure that they meet the quality standards. 9. Packaging: Pack the refrigerator magnets that have passed the quality inspection for transportation and sales. It should be noted that the production process of different metal refrigerator magnets may be different, and the specific production process may be adjusted according to the actual situation.

Driverless vehicle technology is now more and more mature, the future of driverless cars will gradually into people‘s lives, in order to make people better use of driverless cars, the United States plans to build smart cars and smart cars to match Save energy and reduce traffic accidents.

AR technology can be used in the workplace, but also for entertainment purposes only. Factory workers can learn a new machine with a set of hands-on tutorials, architects can walk through the buildings they envision, and police officers can have different perspectives on crime scenes. At the same time, gamers can play on the battlefield directly in front of them instead of just staring at the screen.

Chinese technology giants are rushing to develop facial recognition technology, and actively promote its commercial use. These Chinese companies are clearly more daring than western competitors‘ cautious approach to facial recognition technology and their fear of frightening privacy conscious consumers.

January 8, the latest disclosure of the Ministry of Industry website shows that in order to strengthen the new energy vehicles, motor and rare earth permanent magnet materials and other industrial chain synergies, to promote joint research upstream and downstream enterprises, January 5, 2018, China Association of Automobile Manufacturers, China Rare Earth Industry Association organized a meeting on the cooperation mechanism of upstream and downstream of rare earth permanent magnet materials for drive motors of new energy vehicles in Beijing. Beiqi New Energy, Yutong Bus, Geely Automobile, BYD Auto, North Rare Earth, Xiamen Tungsten, Harbin Institute of Technology and other representatives of more than 20 units attended the meeting.

Recently, the National Development and Reform Commission jointly issued with the National Energy Board, "on the promotion of biomass heat for the development of guidance", "opinions" clearly the biomass heat as an important measure to deal with air pollution and accelerate the biomass heat in the region Civil heating and small and medium-sized industrial park heating in the application of building a distributed green low-carbon clean and environmentally friendly heating system.

E-waste should not be unfamiliar to the residents living in cities. Outdated old phones, obsolete computers, worn out old-fashioned TVs or fans, cell phone chargers, radios, MP3s, etc. ... When these things are used or used bad, how to deal with both convenient and environmentally friendly, it also Has become a problem that plagued many citizens.

According to a report by Russian satellite network on May 5, a new report released by Arctic Council Arctic Monitoring and Evaluation Plan (AMAP) Working Group said that the Arctic is rapidly melting and may be completely ice-free by 2040. In the meantime, a study by the University of Leeds in the United Kingdom found that in Antarctica, ice melts at a rate of about one-third of its expected value.