Qingdao Rainbow Bio-tech invest a plant in 1977,from then we started to make research on chlorophyll series products .After thirty years’ efforts, we now become a leading manufacture all over the world which has annual turnover of more than 300tons of chlorophyll paste, more than 30tons of sodium copper chlorophyllin and more than 4000kgs of vitamin k1 from a small workshop. We also supply Acesulfame K, spirulina, and chlorella, which are widely used in food, beverage, personal care and detergent, pharmaceutical, and feed industries. The company currently focuses on the R&D of new function food and corn starch sugar products.