Detailed Product Description Full Color LED Billboard (Leading Supplies)Indoor - pitch 3.5mm, 4mm, 4.2mm, 4.4mm, 6mm, 7.62mm, 8mm, 10mm, 12mm, etcOutdoor - pitch 10mm, 12.5mm, 14mm, 16mm, 20mm, 22mm, 25mm, 28mm, etc Project Information Yaham patent control systembetter color revivification, more exquisite video display because of advanced technology in the system for gray scale, refresh rate, ...