Zaincorporatio is a the trading company from South Korea called Zain Corporation. We sell Diapers (Baby/Adult) & Sanitary Napkins. A(1st)-grade : Goods, best quality. B(2nd)-grade : Rejected diaper, can not find badness at sight, sold by piece. C(3rd)-grade : Rejected diaper, a mixture with usable diapers and waste, sold by weight. D-grade (Waste) : 1. Some are usable. Mostly shredded diapers, You can use as pulp. 2. [Separated] Cutting edge of poly-trim. 3. [Separated] fluffs. For Sanitary napkins:Sanitary Napkins Quality (Grades A,B,C):1. With Wings 2. Good Quality 3. Individual Packing If you want to buy these items, and also for more information, please feel free to contact us.