Guangtong Group Shandong Guangtongbao Pharmaceuticals Co.,Ltd is the largest manufacturer of chlorophyll series products and vitamin k1 series products. Shandong Guangtongbao Pharmaceuticals Co.,Ltd. started to make research on chlorophyll series products from the 70s. After nearly forty years efforts, we now have developed several series and more than a dozen varieties, i.e. chlorophyll paste, oil-soluble chlorophyll, sodium copper chlorophyllin, sodium magnesium chlorophyllin, sodium ferrous chlorophyllin, sodium zinc chlorophyllin, vitamin k1oil,vitamin k1 powder, vitamin k1 oxide, vitamin D3, natural phytol and 2,6-diphenyl phenol, etc., all the products possess drugs or food production qualification. Our company became a leading enterprise with the most core competitiveness which lead the development direction of global chlorophyll and vitamin K1 industry. Shandong Guangtongbao Pharmaceuticals Co.,Ltd. is a high-tech enterprise combining research and development, production and trade as a whole. The research and development center of the company is Weifang Municipal Enterprise Technology Center and Weifang Engineering Research Center. In 2012, our company was identified as high-tech enterprises. It is the only drafter of WS-10001-(HD-0414)-2002, the national drug standard of sodium copper chlorophyllin and GB26406-2011, the national standard of sodium copper chlorophyllin food additives. Our company has passed the ISO9001 (quality management system), ISO 22000 (food safety management system) and ISO14001 (environmental management system) certification, and went through Kosher certification for Jews. It is the only company passing the GMP Certification in the same industry of domestic enterprises. A number of scientific research achievements of our company fill the blank of domestic products and technology, and overcome the quality problems which required by EU(EP), the UK (BP) and American (USP) quality standard requirements, i.e.