Qingzhou Natural Fields Biotechnology Co.,Ltd is the Branch of Guangtong Group.We can supply products of other branches with best quality and price.The product include Natural colorants,Vitamin K1 series , Silkworm Eggs,Fertilizer,Ventilation Equipments,etc.Contact:Nell BiPhone: 8613864680314, 86-536-3252601Whats app: 008613864680314Web: www.naturalfields.c