Accessories purchase, Please contact our official email or website, remember to attach your machine type and accessories pictures Official [email protected] Official website: https://www.creality.com Any technical support in need, Please contact our official service emailremember to attach your printer model、complete orderscreenshot、purchase link 、printer product SN and the issue relevant video or picture . Official service [email protected] Any inquiry of firmware and softwarePlease download it by creality official websitehttps://www.creality.com/pages/download Creality firmware obtaining tutorialhttps://youtu.be/0rKfgOZAUY