... PCB offer over-discharging,over-charging,over-current, and short-circuit protection,safety for ... ensurance4) Strict Quality Control System aim for 0% defectives before shipment5) 12 months warranty ... to 3000-5000 units. Leadtime 2-4 working daysOEM supportMOQ1000 units, size and thickness, capacity, package and ... transfer, L/C, Paypay, Western Union(30% deposit before production, 70% balance before ...