YAP as a leading designer and supplier of fittings for power transmission lines &substations in Iran,and  Middle East ,Started it's technical and engineering activities to make and supply the fittings in accordance with the essential needs of the power industry and local demands in 1993 under covering of IREEE.

At the beginning ,technical knowledgs of 63 KV transmission line fittings was purchased and after successful Performance of type tests, was oriented for designing and sampling of the fittings for high voltage transmission lines up to 400KV.

Considering the expansion of IREEE activities and market and some foreign projects in order to focus and specialize the activities in field of fittings, all experts,technical  knowledge,hardwares and softwares on fittings transmitted shifted to YAP as independent company in 1999.