Natural pollution-free soda water is also made in China, so only the most popular natural soda water in volcanic springs. Its water source is extremely precious, which is wudalianchi city mineral water in Heihe City, Heilongjiang Province. Like Vichy mineral spring in France and Caucasus mineral spring in Russia, it belongs to cold mineral water, but the spring water in Wudalianchi tastes fresh and sweet, which is much better than the other two kinds of strong soda. It is better to say that it is our domestic brand volcanic spring.