I have been vaping Hangsen RY4 in the Hangsen labeled bottles from another vendor for some time now. Recently I tried Madvapes Hangsen RY4 and it is not at all like the real stuff. Not sure if they are buying the flavor and not mixing right or what? Unfortunately for me, it is not the same thing. Does not taste, look or even smell the same!
It's really hard to compare the two. We buy 0mg bulk liquid from them for our custom stuff. All the bulk china e-liquid comes in pretty much clear in color, regardless of the flavor. We mix our own nic, which may have a very slight tan/pink color to it, down to 300mg/ml.
When we make a 30ml bottle of say 24mg, we're only using 2.6ml of nic which barely affects the color.
Some folks will look at this and say it's different from pre-mixed which it is in terms of age but not really in terms of content.
I'd suggest giving it a little time to tan if the color is a concern and this may also change the flavor a bit which I've seen with some liquids..
As far as flavor differences go with the same product from the same manufacturer, it's pretty typical of china stuff to vary a bit. Wish I had more suggestions..
hoog