I did actually happen to notice that one on the Queen Battery website when I was looking at the EVE 58E last week, I'll link it to you here:
http://queenbattery.com.cn/our-products/1259-eve-21700-58e-36v-5800mah-3c-battery-cell-inr2170058e.html
http://queenbattery.com.cn/content/9-how-to-buy...
Vapcell F60 (FEB 6000mah) is the highest capacity 21700 on the market currently (not the Samsung 50S, Samsung even sells a higher capacity one themselves, the 53G 5300mah).
Vapcell has been getting a lot of the newest cell tech to consumers by rebranding cells from other brands and selling...