Founded in May,2008,Shenzhen Greentech Co.,Ltd was established by former technical director and several senior engineers with rich experience in intelligent control.for the past few years,we were the main OEM manufacturer for domestic hotel guestroom smart control system including hotel electric panel,touch switch,card key switch and wired doorbell;nowadays Greentech are specializing in R&D hotel intelligent control system which contains hotel electric panel,LCD touch switch,dimmer switch ,card key switch and wired doorbell .