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At the beginning of the session, most US stocks of industry ETFs fell, while semiconductor ETFs fell by 1.12%, technology ETFs and banking ETFs fell by at least 0.3%, network stock index ETFs rose by over 0.2%, and energy ETFs and optional consumption ETFs rose by about 0.8%.Ukraine's national natural gas transportation company said that on December 10th, Russia nominated 42.34 million cubic meters of natural gas at Sudan border crossing, compared with 42.31 million cubic meters on December 9th.The central bank increased its holdings of gold and released a positive signal. Shanghai Gold ETF received a net purchase of funds for eight consecutive months. According to the data, as of the end of November, 14 commodity gold ETFs listed and traded in A shares all received a net purchase of funds during the year. From April to November, two ETFs received net capital inflows for 8 months, and Shanghai Gold ETF(518600) was the one with the largest net purchase, with an interval net inflow of 370 million yuan, which attracted considerable attention. (China Securities Network)

Lianchuang Optoelectronics: The smooth-blade series laser anti-UAV products have carried out preliminary cooperation negotiations with several airports. Lianchuang Optoelectronics said on the interactive platform on December 9 that in the face of "low-slow and small" flying objects represented by drones, there is a lot of room in the domestic low-altitude security equipment market. The company's smooth-blade series laser anti-UAV products are combined with the developed "low-altitude defense system command and control platform application software" and have the ability to install and deploy countermeasures equipment groups. To build a low-altitude defense system for users, we have carried out preliminary cooperation negotiations with several airports, but it is still in the early stage of negotiations, and there is still some uncertainty about whether we can expand the domestic airport security market as expected.According to statistics, on December 9, as of press time, five A-share listed companies including Jinghua Laser, Wuxi Zhenhua, Mindong Electric Power, Tefa Service and Yandongwei disclosed their holdings.Wenfeng shares: There is no plan to discuss cooperation and reform with Fat Donglai at present. wenfeng shares said on the interactive platform on December 9 that the company has no plan to discuss cooperation and reform with Fat Donglai at present.

Xiaomi's second car "YU7" was announced by the Ministry of Industry and Information Technology, and Xiaomi's second car officially landed in the Ministry of Industry and Information Technology. According to the information of the Ministry of Industry and Information Technology, the second model of Xiaomi Automobile is a pure electric SUV, and the trailer label shows that this model is named "YU7". The new car is 4999mm long, 1996mm wide and 1600mm high, with a wheelbase of 3000mm and a top speed of 253 km/h. The new car will use ternary lithium-ion battery produced by Jiangsu Times New Energy Technology Co., Ltd., and the peak power of the driving motor is 220kW/288kW, and it is equipped with an automobile event data recording system (EDR).The net inflow of 14 extra-large single shares exceeded 200 million yuan. According to data treasure, today, the net inflow of 14 extra-large single shares exceeded 200 million yuan, and the net inflow of Keli Sensing extra-large single shares was 669 million yuan, ranking first in the scale of net inflow funds; The net inflow of Sanfeng Smart Extra Large Orders was 626 million yuan, ranking second; The top net inflows are Fenda Technology, Vanadium and Titanium, and China Unicom. Among the extra-large single net outflow stocks, yongtai energy's extra-large single net outflow funds were 1.963 billion yuan, with the largest net outflow funds; The net outflow funds of Zhonggong Education and Oriental Fortune were 1.638 billion yuan and 1.470 billion yuan respectively, and the net outflow funds ranked second and third.The main force of China INE crude oil futures just broke through the 530.0 yuan/barrel mark, and the latest price was 530.1 yuan/barrel, up 1.69% in the day.