... - pitch 3.5mm, 4mm, 4.2mm, 4.4mm, 6mm, 7.62mm, 8mm, 10mm, 12mm, etcOutdoor - pitch 10mm, 12.5mm, 14mm ... 25mm, 28mm, etc Project InformationPitch & LED3.5mm, the smallest pitch for commercial use up to now (April 2009 ... ). As you know, smaller the pitch is, relative design techniques, processing techniques need ... defects, we should maintain the screen of pitch 3.5mm in the front but not the rear. ...