Shenzhen Anbot Power Supply Technology Co., Ltd.,Founded in 2008, which specializes in manufacturing contactless AVR(automatic voltage regulator), UPS, and transformers.Our company is an ISO9001 and CE certified facility, with main customers like BYD auto, Hans laser, Trumpf German, Foxconn, etc.For the advantages of contactless AVR, please find the comparison between Contactless AVR and Brush type voltage regulator : 1) Precision of voltage regulation is 1%, comparing 3% from carton brush type. More accureate & Stable.2) It only take 20ms to regulate voltage, comparing 1000ms from carton brush type. Faster response & protection.3) No Brush, no Abrasion, no Motor = No maintenance = Save money & energy.4) With overload, shortload, short circuit, lack of phoses and automatically bypass protection. No hazard.5) No Power on compension, no damdage to equipments.Please feel free to contact us if you need any of AVR, UPS, and transformers products.