In order to survive in a competitive market, improving quality and productivity of
product or process is a must for any company. Some simple techniques like the “seven basic
quality control(QC) tools” provide a very valuable and cost effective way to meet these objectives.
This paper presents a case study in which a local plastic injection moulding company deployed
some part of the “seven basic quality control(QC) tools” to significantly improved the monthly
defect quality from 13.49% to 7.4%. However, to make them successful as cost effective and problem
solving tools, strong commitment from top management is required.