Welcome to our Linkedin company page. I'm glad you found us and thanks very much. Tzone Digital Technology Co., Ltd., a leading Hi-Tech enterprise with consolidated R&D team, production line and sales team, was established in 2006, and is specialized in temperature & humidity monitor. Our factory covers about 1,500 square meters and owned 60 workers, 6 production lines and it have a large advantage in price and quality. My Product: Single use USB temperature data logger, multi-use USB temperature humidity data logger, thermometer, thermograph,Ultra vaccine temperature data logger. blutooth temp rh data logger, temperature & humidity transmitter, Lora temp rh sensor. Lora sensor, GPRS temperature & humidity monitor, etc. Certifications: ISO 9001:2015 registered quality management system FCC TCB EQUIPMENT AUTHORIZATION CE RoHS EN12830 FDA WHO testing report RoHS compliant Phone:86-755-82840647 Email: [email protected] Website: http://www.tzonedigital.com