Ebook CW1516 windows 8.1 touch screen and touch pen drivers needed

Last month after windows 8.1 latest update, both touchscreen and touch pen stopped working. I reinstalled windows 8.1 from update & recovery option. Now I do not have drivers and boot without driver signature verification also not working. Please share windows8.1 drivers for" Chuwi eBook Stylus Tablet 10.1 inch Windows8.1 2GB/32GB Intel Z3736F Quad Core 2.16GHz IPS 1280*800 + HanWang ES4 Touchpen