Nanjing OPTIWING International Co., Ltd. IS a United Group conpany specialized in manufacturing and trading. We have our own factory for PVC flex banner, self adhesive vinyl, oil canvas, advertising products and related machine. Our group bulit Nanjing OPTIWING International Co.,Ltd as head office in Nanjing for for international service. Nanjing OPTIWING International Co., Ltd. Is a leading enterprise with a collection of production,R&D, marketing and after-sales services. Impeccable management sturctur, innovative product model, and honest service system,aming to becoming the leading supplier of digital advertising materials.