I have the standard cartomizers, dual core short and long, clearomizers standard and XL solid and clear. I have gaintomizers the old type the mid and newest ones. None of these are like the the Apoloe 580. Shenzhen Tiandaxing Technology Co., Ltd. as far as I can tell came up with the design. They are by far the best cartomizers I have used.
Tiffany Tang was my contact she should get some credit for the sale.
I give her and Shenzhen Tiandaxing Technology Co., Ltd. a big thumbs up!
The batteries are all top notch as well.
Vendors have at it!