PHQ company in accordance with the requirements of the Ministry of Industry, Mine and Trade, Ministry of Cooperatives, Labour and Social Welfare and standards organization And industrial research as well Requirements specified in the management systems of the HSE-MS and OHSAS 18001: 2007 With the permission of the National Institute of Standards No. naci 422 Visit ready to provide technical services and testing period of tower crane in accordance with the requirements of the Engineering Council and the Engineering Organization of Tehran Municipality is approved.