Portland Cement 42.5
Sell Factory of portland cement

The bar-shaped special full color LED display belonged to the group of display for both outdoor and indoor use which is mainly applicable to the outdoor extremely large live LED display project. In order to ensure enough luminance of pixels for outdoor display project, the silicone sealant has been used to seal the front surface of the modules for waterproof treatment and the color of silicone sealant corresponding to color charthas been customi