(On January 18, 2006, the State Environmental Protection Administration Order No. 31 was promulgated according to the "Administrative Measures on the Safety Licensing of Radioisotopes and Radiation Devices" adopted by the Ministry of Environmental Protection at the 2nd Ministerial…

The brewing China's resource-based product price reform has finally made new progress. On December 24, the General Office of the State Council issued the "Several Opinions on Promoting the Sustainable Development of Resource-based Cities", which for the first time clarified that …

…

• Model NO.: YD-1013
…

1 World Copper Resources

The global copper resources are abundant. According to the US Geological Survey (USGS, 2010~2012), the global terrestrial copper resources exceed 3 billion tons, and the copper resources in deep sea mine nodules are about 700…

…

If you are observing people, you will find that there are some people whose doors are open and there is still a chain hanging, or there are some things behind the doors that are buckled. This is what we have heard of the anti-theft deduction. . The following Xiao B…