HARBIN, China--(BUSINESS WIRE)--China Kangtai Cactus Biotech Inc. (OTCBB:CKGT), a vertically integrated grower, developer, manufacturer and marketer of a variety of cactus-based products in China, announced today that it has entered into a definitive assets purchase agreement to acquire the assets of Raoping County Dadi Tobacco Trade Center. (Hereinafter referred to as Dadi).