Shandong Guangtongbao Pharmaceuticals Co., Ltd. Is the leading manufacturer of chlorophyll series products, vitamin k1 series products in the world. Besides that, we also produce vitamin k2, vitamin D3 powder food grade, natural phytol, 2,6 diphynolphenol. More than 70% of our products are exported to U.S.A, Europe, Japan, Korea, Australia, Newsland, Canada and more than 30 countries. Our products enjoy high reputation in international market.