Centch Electronics is a professional manufacturer of high quality energy efficient, LED edge-lit,LED side-ray and LED backlit signs.Our main products including: LED light Box(edge-lit, backlit and side-ray) ,LED writing board, LED advertising lighting system and any custom design led products. All our products are have CE and ROHS certificate. Team of professional expertise keeping us on the top of up-to-date technology in optical design and application in our products. Well equipped instruments and talented expertise team engaged our top advantageous. Our Main Projects in China for huge size or special shape light Box: Shanghai Hongqiao Airport(Interactive Advertising LED Signs)Shanghai Subway Line 1 (LED light box)Beijing Subway Line 10 (LED 2D light box)Shandong Urban Planning Exhibition Center(Curved LED light box)