... Industrial Co., Ltd., DiChen Group (Hong Kong) Limited.The Dichen Cistanche Tubulosa series Extract adops our own ... Dichen Group ,which extracted through advanced equipment as well as technologies such as ultrafiltration membrane separation and nanocrystals purification ... & Bio-technol CO.,Ltd Dichen Group(HK)Limited-----------------------------Room1810,LiangYou Masion,No.618 Shangcheng Road, Pudong ...