British Glass is calling for seminar presentations, based on practical examples of large manufacturing businesses securing funding for improvement in energy efficiency and carbon reduction, for a one-day glass industry event in November 2017. Any transaction can be seen as a contract between the two parties. The so-called transaction cost can be seen as the cost of the transaction contract. According to Mr Coase and others, a type of transaction costs arise from the accidental factors that occur when a deal is signed. These incidental factors may not be written into the contract due to the fact that they could not be foreseen in advance, or although they could be foreseen, they could not be written into the contract due to too many factors. Another type of transaction costs is the signing of contracts and the cost of monitoring and enforcing contracts. With the development of social division of labor and market economy, the concept of market is also developing and deepening, and the multiple meanings of different levels are reflected in the deepening of the project. Among them, the repeal of the affordable care act means obamacare will be repealed, and the tax reform bill has essentially repealed obamacare. The media is expected to sign a tax reform bill on January 3 that would make it a bill.