Multi screen interaction, Google cast_ The Shanghai stock index closed slightly lower: nearly 3500 stocks fell, and the agricultural and chemical fertilizer sector strengthened against the market

, , made significant progress, European and American stock markets, gold, straight line, A50, fell, crude oil, rose sharply, Russia, delegation on March 29, the Shanghai stock index rose and fell, and then maintained a narrow fluctuation trend, once falling Read more…

Projection, mobile phone projection_ Antigen detection reagents have been widely used, and the market scale has exceeded 200 billion yuan. The products of 19 companies have been approved (with shares)

, , more than 14 million people in Shanghai have carried out antigen detection. Its advantages of fast speed and simple operation form an important supplement to nucleic acid detection, Shanghai has launched a new round of nucleic acid screening, Read more…