Quality function deployment (QFD) has been widely used to translate customer requirements to a product’s technical attributes. Correctly rating the importance of every customer requirement is essential to the QFD process because it will largely affect the final target value of a product’s technical attributes. The success of a product depends not only on whether it meets the customer requirements, but also on how it compares with competitor products. In design evaluation, alternatives are evaluated against several criteria, such as low cost, short lead time and other general minimum requirements to be satisfied. The specification of quantitative performance requirements is necessary in order that the evaluation can be carried out systematically. However, precise (crisp) performance requirements are normally not adequate, for example, it could be stated that the maximum cost of a design is Rs.2000, but Rs.2500 may be still acceptable. Because a requirement like this is imprecise (fuzzy), a fuzzy set or fuzzy number is appropriate for capturing it.

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Edward Bowditch Ltd
Exstowe, Exton, Exeter, EX3 0PP, United Kingdom

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Legal entity name: Edward Bowditch Ltd
Legal entity form: Limited company
Business correspondence address: Exstowe, Exton, Exeter, EX3 0PP
Company registration number: 04916632
VAT registration: GB834241546
Authorised representative: Mr. E. Bowditch

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Orders usually dispatched within two working days. Please note that at this time all domestic United Kingdom orders are sent by trackable UPS courier, we choose not to offer a lower cost alternative.

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Order quantity	7 to 14 business days	2 to 3 business days
First item	US$ 13.38	US$ 20.07

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