I haven't had any luck tracking down the manufacturer, sorry.
While I am not impressed with the two I bought, they are getting good reviews from others that tried them. I guess pulling a strand or two of wick livens them up. I was getting burnt hits when chain vaping (the vaping I do most).
These are different than a lot of the other bottom coil equipment. They perform best when you use long, slow draws and not much suction pressure. My other bottom coil equipment does better with higher draw suction. I think it helps pull liquid into the coil head. A lot of suction pressure doesn't help these at all. In fact, it produces inferior vapor quality compared to an easy draw. It took some time for me to adjust to the slow and easy method but now I find it refreshing to not have to work so hard on the draw.
Sometimes I chain vape for hours and I don't get dry hits on these. I run low voltages on the 2.4ohm heads, usually under 3.7, but it depends on the juice. I don't know how these are performing so well at those voltages but it's working great for me so I'm not going to question it too much.
My only complaint is that I'm tearing through juice like crazy since I got these.
