In a Shenzhen vape factory, workers test up to 10,000 vapes daily by puffing on them to ensure quality and functionality. This process was revealed in a documentary by the YouTube channel Machina, Bootleg marijuana vapes produce vapor tainted with formaldehyde, tests show Amazon.com: Exploro Nicotine Testing Kit at Home, Cotinine Urine Test, Highly Sensitive Nicotine Test Strips for Urine, Nicotine Test, Accurate Nicotene Test & Vape Test for Cut Off Level 200 ng ml (Pack of UTEST ALL IN ONE 3 PANEL TEST KIT Radical Vape Shop An alarming investigation into Chinese disposable vape factories has uncovered a controversial practice that challenges our assumptions about product safety and worker conditions. At facilities in