3, the implementation steps ① collect data classification using stratification method, the layers do not project to calculate the percentage of the total project; ② to the sorted data aggregated from more to less arranged, and calculate the cumulative percentage; ③ draw horizontal axis and vertical axis scale; ④ draw histogram; ⑤ draw cumulative curve; ⑥ ⑦ analysis necessary items recorded Plato points: A Plato has two vertical axis, the left vertical axis represents the number or amount of the general right vertical axis represents the number of general Cumulative percentage or amount; B Plato abscissa represents examinations QC practices general principle, according to the degree of influence the size of the QC techniques, from left to right in order of priority; C draw when Plato QC step approach, the number of frequency according to the number or amount of each item appears QC techniques in practice, draw a straight vertical axis corresponds to the left side of the square, the cumulative frequency of each item will appear in the corresponding right-hand ordinate delineate ideas, and these ideas in order to connect a cable. Seven Basic Tools of Quality: also known as the old and the new seven QC tools (techniques) are summed up by the Japanese out. After the Japanese made the old seven tools to implement and succeed, in 1979 also proposed a new seven tools. QC seven old emphasis on statistical analysis techniques, aimed at improving the problem occurs, the new emphasis on thinking QC seven practices analysis process, we are emphasizing prevention before problems occur. It is called "seven tools" because at the time of the ancient Japanese samurai combat appearances, often carrying the seven weapons, the so-called seven tools that follows the seven weapons. Organizational quality management refers to the quality management from the perspective of the organizational structure, business processes and staff work methods, it is built on the idea of ??total quality management, the main contents of establishing the quality policy, the establishment of quality assurance system, carry out QC group activities, departments sharing responsibility for the quality, quality diagnostics. QC practices training, enterprises Road (certified), QC practices by enterprises in Huizhou City Road Enterprise Management Services Limited. Huizhou City Enterprise Road Enterprise Management Services Limited (isoew.com) Guangdong Huizhou, other leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In the road leading enterprises with the staff warmly welcome all inquiries negotiations to create a better way prices in the future.