Elfbar and Lost Mary Touting 281 Point Safety Testing Protocols Tobacco Reporter Amazon.com: TeenCheck(TM) for Vaping (10) : Health & Household Bootleg marijuana vapes produce vapor tainted with formaldehyde, tests show 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, 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 Age Verification Testing One in Four Vapes are Sold Without ID Checks