Sensing a good opportunity in the textile business, Dhirubhai started his first textile mill at Naroda, in Ahmedabad in the year 1977. Textiles were manufactured using polyester fibre yarn. Dhirubhai started the brand Vimal, which was named after his elder brother Ramaniklal Ambanis son, Vimal Ambani. Extensive marketing of the brand Vimal in the interiors of India made it a household name. Franchise retail outlets were started and they used to sell only Vimal brand of textiles. In the year 1975, a Technical team from the World Bank visited the Reliance Textiles Manufacturing unit. This unit has the rare distinction of being certified as excellent even by developed country standards during that period.