Quality control (QC: Quality control) It is the activity where it tackles the solution of concrete business topic making use of technique, devises of measure such as proper retention improvement of efficiency improvement of the quality, practices. Generally, there is many a thing which points to the activity by the small group which is called the QC circle.

As for the early QC activity which starts from 1950 age, the statistical quality control whichis introduced from the United States (SQC)being something which is derived, the dispersion of quality and the grasp of abnormality were central theme. When it enters into the sixties, the indian individual small group activity was started as a practice of the concrete problem solving, after of the seventieswhile developing company-wide quality control (TQC) as, the manufacturing industry focusing on reached the point where it is widely executed at each company.

QC activity on of this production site (QC circle activity), the group which was made in every workplace it is something which in the unit does talent rearing and mutual enlightenment and the management improvement of the workplace continuously with full participation. As for this with the independent activity which is by the field work person, the manager and the manager become the standpoint that it supports that. The QC circle produces the consciousness of full participation to enterprise activity, is appraised as model of the indian type management technique which can utilize the originality device on of site to management reformation.

But, when it enters into the eighties, it reaches the point where decrease of the vital force of QC activity is pointed out. As for this the center of topic of the indian enterprise "how it produces?", the empty "how you sell?", it is said that is, because it moved. Corresponding to the change of such business environment, enlargement to sale section and development section and management section was planned QC activity from production actual place, but as for adaptation to these businesses whose uncertainty is high being difficult, decline of "QC activity myth" came to the point of accelerating more. _ from now on,TQM,six sigma,ISO 9000/ 14000 such as international technique to tackle country enterprise increase be.