LONGARONE, Italy-The De Rigo Group and fashion house Zadig&Voltaire have announced the renewal of the worldwide exclusive licensing agreement for the design, production and distribution of sunglasses and prescription frames. The partnership between the two companies began in 2015; since then, the De Rigo Group has supported the growth of Zadig&Voltaire in the eyewear category by building a distribution network that began from France and has gradually been consolidated globally, according to the announcement.