Shandong Guangtongbao Pharmaceuticals Co., Ltd. is located in Qingzhou City. We are the most competitive professional manufacturer of chlorophyll products and vitamin k1 oil and powder. Our business scope includes fine chemicals, pharmaceuticals, foodstuff and fodder import and export business. Shandong Guangtongbao Pharmaceuticals Co., Ltd. was established in 2004. Our predecessor was Shandong Province Qingzhou Biological & Chemical Institute for Mulberry Silkworm Eggs, which was engaged in the research and development of chlorophyll products. We are engaged in the production of...