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It is hard to open soft drink bottles. And it turns into sugar water so easily once it opened.
Elderly people, children, and women sometimes need the man's help to open them.
However, soft drinks turn into sugar water so fast once the bottle opened.
The sodavalve can help people open soft drink bottles very easily.
They don't need the man's help any more.
The soda valve also enables them to keep the bottle upside down.
It will stop the escaping gas from soft drinks.
Ulsan, South Korea