GLOUCESTER, Mass.--(BUSINESS WIRE)--TradeStone is a game-changing merchant experience for retailers, brands and suppliers that form some of the world’s largest retail communities. Carolina Pad, most recognized at retail stores under the brand Studio C (www.shopstudioc.com), is a leading supplier of fashion accessories to retailers worldwide and is known as the brand that first brought fashion to school and office products by focusing on consumer trends and design rather than strictly manufactur