... , undergoes drop test, smash test and acupuncture test to ensure no fire and explosion in breakingQCBefore fixing, each PCB is tested ... of us is final.(2) Delivery time:1. DHL, UPS, Fedex, TNT, EMS express shipping usually takes 3-7 working days depending on ... , delays or other issues that are the responsibility of the shipping service.4. In order to ensure you receive your order tax ...