gross profit is calculated by In November 2017, Advisor Perspectives published an article said that in addition to the improvement of fuel efficiency, petrol consumption decline is due in large part to the following factors: the ageing staff away from the workplace; The home office model is developing more and more; Social media takes the place of face-to-face communication, and travel is unnecessary. More and more young people are no longer driving their cars. And urban population growth accelerated, reducing per capita gasoline dependence. We have been using internet banking for quiet sometimes now. Even though there have been internet banking security breach occasions, but the percentage is quite small. People has learned to be very careful and protecting themselves when you use internet banking. Internet banking users are smart people and they also discover how to protect their computer from malware and hacker which includes the possible to destroy into their internet bank-account. In 2017, the flash capacity of each server will be 2.5 terabytes, which will reach 8TB by 2021, and the average DRAM capacity of every server in 2017 will be 145GB, which will grow to 350GB by 2021. The accounting income maintains the financial capital preservation, namely, the monetary value that only requires the owner to invest is not eroded, the enterprise income exceeds the input value part is the accounting income. Accounting focuses on reporting financial results. The economic benefits insist on physical capital preservation, which can only be confirmed when the actual production capacity of the owner is saved. It is believed that only by maintaining the actual production capacity of the enterprise can the enterprise reproduce smoothly. Physical capital preservation is more meaningful than the income of financial capital preservation, but it is difficult to measure. According to financial data from its official website, revenue rose from $1177,000 to $40,374,000 in 2015-2017, and after-tax profits rose from $713,000 to $7082,000.