An Extensive QFD and Evaluation Procedure for Innovative Design

Table 2

Product design attributes.

Level 1	Level 2	Level 3
Basic function	Specifications	Simplify parts
		Design for assembly
		Weight
		Size
	Mechanism	Driving mechanism
		Breaking mechanism
		Derailleur mechanism
	Safety	Material of frame
		Maintenance
		Breaking performance
		Structural strength
Ergonomic	Comfort	Heat dissipation of saddle
		Suspension performance
		Body dimensions
		Stability of tire pressure
	Handling	Derailleur maneuverability
		Flexible adjustment
		Brake system
		Convenient to pump up tires