Prepare a questionnaire on a product that your selling and according to the reviews from your consumers what all changes have you made in the price, design etc. Keep the following customer needs in mind:
1) Safety
2) Performance
3) Appearance
4) Comfort
5) Economy
6) Durability

1) the stages a new product goes through from beginning to end, i.e., the stages that a product passes through from introduction through growth, maturity, and decline. 2) the time from initial research and development to the time at which sales and support of the product to customers are withdrawn. 3) the period of time during which a product can be produced and marketed profitably.

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