Shanghai All-light Photoelectric Technology Inc. (SALPT) is a professional manufacturer for the production of guiding marker and super-thin light box.

Lightguide exrtra-thin light box is a high-tech laser engraving products with thin and beautiful appearance, energy efficient characteristics, safe and reliable circuit.

It is a new multi-functional advertising medium, which cannot be broken, and it applies the backlight model setting that is formed by light guide plate and integrates various material of frame.