Banlangen Granule (Hongjitang/Ainongkang) manufacturer. Shandong Hongjitang Pharmaceutical Group Co., Ltd. 1 1 Yuan Banlangen Granule, Ainongkang Technology Industry Co., Ltd. is a wholly-owned subsidiary of Qingdao Henghui Chang Xun Holding Co., Ltd., which is a high-tech enterprise integrating scientific research, production and sales and focusing on health and environmental protection industry.