H Farsijani - Industrial Management Department,Shahid Beheshti University
M.A Torabandeh - Industrial Management Department,Shahid Beheshti University

Nowadays, considering the wide commercial competition among companies, customization of products and services is regarded as a crucial problem to reach world class. That is to say companies must recognize customers’ demands and implement them in their products technical requirements. Furthermore; to apply the products technical requirements, companies must resolve the technical requirements conflicts as soon as possible. The current study provides researchers an instrument for designing customized transformers in Transfo Company. In this regard, first, fuzzy QFD tool is implemented. In the House Of Quality matrix process, fuzzy Analytic Hierarchical Process (FAHP) is implemented forweighting customers’ requirements and advanced decision-making software is used for calculating adaption coefficients, respectively. But there are some conflicts among technical requirements to satisfy customer requirements. So, TRIZ instrument is used for resolving the conflicts among technical requirements in short time based on the customer requirements priorities. Regarding its purpose and data collection method, this research is an operational case study. This research statistical population consists of Transfo company’s experts that are familiar with designing of customized transformers. Due to expert’s limited number, no sample selection method was used. Questionnaires’ validity wasconfirmed and their permanence was proved through calculating adaption coefficient

QFD, House Of Quality matrix, Fuzzy Theory, FAHP, TRIZ