Profile: NB Group Co., Ltd. is a manufacturer and supplier of feed grade choline chloride, vitamin B2, and L-threonine products. We are certified with ISO 9001 certification. Our choline chloride is the most economical form of choline. It contains corn cob base, silica base, and liquid. Vitamin B2 (riboflavin) is another of our products. This product is made by the raw materials of glucose and peptone through biological fermentation, membrane filtration, crystallization, and spraying & drying process. It is a free flowing particle, and a nutritional additive. The appearance of this product is a good flowing and unification yellow or yellow brown particle, and tastes a little bitter. It can easily dissolve in slightly alkalescent liquors, but hardly in water or ethanol. It has a substantial stabilization in oxidant and acid substances, or in high heat condition. It will quickly break down in alkalescent liquors, or under UV light. It must be preserved in enveloped, and non-light ray condition.