All-round support: You place order, we provide 7 * 24 hours after-sales service and remote support, your babysitter for local marketing or promotion programs Long-term business: High Repurchase rate-40% Strong Technical Team: Experienced and professional R&D team，20 R&D Engineers from famous Science Technology University. Strict Test/Calibration: Every Products verified by CE, ROHS, tested by professional testing institute with Calibration Report.