Shenzhen YDF electronic Co., Ltd. is a professional and high-tech manufacturer specializing in the development, production and marketing of electronic cigarettes. Since the establishment in 2009, YDF has devoted to the R&D and quality improvement. With a professional R&D team, skillful workers, a comprehensive quality control system and good after-sales services, our products have been exported to abroad about 20 countries and regions, such as America, Europe, East Asia and the Middle East . YDF company not just has the independent brand of "KRORK", but also can provide professional OEM manufacture and production service. We have been a famous OEM supplier for many overseas E-cigarette brands.