Earth Day, that is, April 22nd every year, is a festival specially set up for world environmental protection, aiming at raising people's awareness of the existing environmental problems and mobilizing people to participate in the environmental protection movement.
Earth Day was initiated by Gaylord Nelson and dennis hayes in 1970. Today, the celebration of Earth Day has developed to 192 countries around the world, and more than 10 billion people participate in it every year, making it the largest folk environmental protection festival in the world. Since 1990s, China has held Earth Day on April 22nd every year. 1970 On April 22nd, the United States held the first Earth Day activity, which was the first large-scale mass environmental protection activity in human history.
World Metrology Day Activity Plan 1
In order to implement the "5.20 World Metrology Day" publicity activities of AQSIQ, Provincial Quality Supervision