【续航大增！韩国微型燃料电池让无人机飞行时间超过2小时】国外电气工程社区All About Circuits 1月19日消息，无人机面临的一项主要挑战是电池续航，而韩国的研究人员在声明中说他们找到了办法：微型燃料电池。
据介绍，目前普通无人机一次充电的续航时间约为1个小时，这可能会限制无人机的用途，尤其是用于灾难救援之时。韩国斗山创新（DMI）本周宣布，他们已经成功地将无人机的飞行时间延长到两小时以上。这得益于使用氢燃料电池，与锂离子电池或锂聚合物电池相比，其有更高的能量密度。#无人机资讯#

Look For Restocking And Teardowns To Increase In H2 2021
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In the past 10 months, part sales and prices are down substantially due to the Covid-19 virus crisis. Questions persist about when will restocking begin and when and how much will a major increase in tear downs affect component pricing?

China remains world's largest online retail market: ministry
China's online retail sales of goods rose 14.8 percent year on year to 9.8 trillion yuan (about 1.5 trillion U.S. dollars) in 2020, data from the Ministry of Commerce (MOC) showed Tuesday.
China has ranked the largest online retail market in the world for eight years in a row, the MOC said, noting that online retail sales accounted for 24.9 percent of the country's total retail sales volume last year.
Surging online sales boosted the courier sector, with a total of 83.36 billion parcels being delivered through the year.
In 2020, e-commerce sales via livestreaming also gained popularity, with more than 20 million livestreaming marketing activities taking place.
The MOC data also showed that the country's imports of consumer goods increased by 8.2 percent year on year to 1.57 trillion yuan.