Quality control indicators include: gasoline antiknock property (research octane number, motor octane number, antiknock index), sulfur content, vapor pressure, contents of olefins, aromatics, benzene content, corrosion, distillation range, etc. In January 2014, the national general motors (gm) IV standard was used. The state administration of quality supervision and inspection and the national standards commission issued the mandatory national standards for motor vehicles in phase V. The plan is to be implemented at the end of 2016. The sulfur content is the most critical environmental protection indicator in vehicle gasoline. In order to further reduce the emission of vehicle pollutants, the national V standard lowers the sulfur content limit from 50ppm in the fourth stage to 10ppm, which is 80% lower. Manganese has the potential risk to human health, and the vehicle emission control system will also have adverse effects. According to the principle of prevention, the limit value of the manganese content indicator is reduced from 8mg/L in the fourth stage to 2mg/L, which stipulates that no artificial addition is allowed. In order to further reduce the photochemical pollution caused by the evaporation of gasoline, and reduce the gas intake system of the automobile engine, the national five standard reduced the level of olefin from 28% to 24% in the fourth stage. Due to the decrease of octane number caused by the reduction of sulfur and manganese, the number of gasoline used in phase V was adjusted from 90, 93 and 97 to 89, 92 and 95 respectively. At the same time, considering the development trend of the automobile industry, the index requirements of motor gasoline are added in the standard appendices. Are you thinking of starting your personal business, but worried about the charge? A smart move that may save entrepreneurs money using the latest technology is working virtually-from the comfort of your home. When you think of starting your own personal home based business, first thing visit your mind will be save your time and cash while spending lots of free time with the family along with the flexibility of creating your individual schedule. Keynes argued that savings and investment were two interdependent variables, not two independent variables. It looks like a big box and has doors and Windows, which people call "box cars". It is named "sedan" in the catalog because it looks like the "sedan chair" of the European ladies used for travel and other occasions. Gas car "The borrower may feel that they are from a rise in the benchmark interest rate in the full impact of ease, but when the highest SVR is priced at 6.08 PC, know some SVRs didn't see a rising interest rates could no comfort. Consumption is up 3.1 per cent, according to mastercard, but online retailers are experiencing the best performance of the sales growth, up 12 per cent year on year. Although the supermarket's busiest day is expected to be Friday, card operators have found that spending on groceries has fallen by 0.1% so far.