So THAT'S how they make knockoff batteries.

Also you can buy heat-shrink sleeves on AliExpress with "Samsung" or "LG" pre-printed on them so you can heat-shrink over your sketchy off brand 18650 cells and sell them as name brand. Want your garbage 900mAh lithium ion cells to look like a genuine 3500mAh name brand LG? No problem! A roll of 100 sleeves is like $4.