the benefits of olive oil By transferring ownership and control of data, the entire society's passive consumers will be active participants. With the tools to audit the supply chain, labor security, fair trading, and organic production will all be validated. We can replace advertising terms with proof and replace trust with auditability. "British shoppers more savvy than ever before, and ready to search the best deals on the net, the gimmicks and discount stores provide more and more sensible, many people now realize that may not be as they first appear. Microsoft's Surface Pro, Surface Laptop, Surface Book and Surface Studio are the main products of Microsoft's Surface series, but there is a clear difference in the share of the devices. The Surface Pro products account for the highest share (79.9%), the Surface Book (7.5%), Surface Laptop (2.0%), and Surface Studio (0.2%). A broad market is a group of vendors and individuals who are associated with other vendors and individuals to buy and sell certain goods. The size of the market, the size of the market, is the number of buyers. Network planning technology is a scientific method of planning and management, which is developed with the development of modern science and technology and industrial production. In the 1950s, in order to meet the needs of scientific research and the management of new production organizations, some new methods of planning management were introduced abroad. In 1956, dupont studied the key line method of network planning technology (CPM) and tried it on a chemical engineering project, and achieved good economic results. In 1958 the United States naval weapons when "Polaris" missile plans, applied the plan evaluation method (abbreviated as PERT) project plan arrangement, evaluation, audit and control, was a huge success. In the early 1960 s, the network planning technique, has been in the United States all new construction fully adopt this kind of new method for program management, could be introduced into Japan and Western Europe and other countries. With the rapid development of modern science and technology and the continuous improvement of management level, network planning technology is also developing and improving. At present, it has been widely applied in the fields of industry, defense, construction, transportation and scientific research of the world, and has become a scientific method of modern production management in developed countries.