... glue to varnish module surface, the glue thickness for each module is not more than 0.1mm, ... and long life, we select the best chips for all outdoor display, red chips are from Hitachi ... , modules, spare parts (Silan Chip) for TWO years.2.We provide technology training for free, which contains the operation ... the problem.5.We also could solve problems for you until it recovers well by remote control! ...