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To shorten products development time, increase products quality, reduce cost and meet the requirements of customers have become the crucial issue in today's enterprises competition. There are many design control strategies to evaluate all possible issues and avoid the time and cost waste from improper design. In this research, QFD (Quality Function Deployment) is as the infrastructure and AHP (Analytic Hierarchy Process) is to measure the relative importance weights of product requirements. Then, QFD results transfer customer' requirements to engineering parameters in TRIZ (Theory of Inventive Problem Solving). After all rules of concept design have been deployed, the products can be proved by applying FMEA (Failure Mode and Effect Analysis) for reliable analysis. Finally, an example of the design process of safety catch mechanism in the pneumatic staple gun is implemented to explain these design strategies for the product development process.