Rung International offers. Rung International is an ISO 9001 registered organisation. Rung International manufactures different types of primary food colors, natural food colors, synthetic food colors, blended food colors, and reactive dyes. The Red Beet Juice Powder with 0.3% to 0.45 betanine is available as red to purple free flowing powder used in confectionery, soups, dairy products, sauces, instant, deserts, meat products, ice creams and soft drinks. This powder is highly stable and is packed in blue virgin drums as bulk packing.