I've seen chocolate and candy by the Korean company Lotte for sale in various Chinese supermarkets, but never their Xylitol gum (which has been around since 1997, but likely mostly in Asia). I picked this up from a Korean supermarket. Their packaging is all in Korean, but what I can make of it, it has 60% xylitol content. Xylitol has been shown to promote dental health, one of the reasons I've recently switched to this kind of gum (another being to avoid chemical sweeteners, which seem to be in all gums these days). This is a bag of gum, less convenient than the small plastic tub, but probably less packaging. It was about $5.
What does Original flavour Lotte Xylitol Gum taste like? From their Website, they also have Lime and Mint, Mint, and Blueberry Mint flavours, available in Asia; these could be interesting. This one tastes of mint, though not a very strong mint.