This is Wu xi ARK Technology Electronic CO., LTD We are Chinese manufacturer of LED digital display: 7segment LED digital display, dot matrix LED digital display,arrow LED display,LED digital bar ,we also accept customization. If you need quotation, you can send me the product information or data sheet . Our daily output is more than 7KK (count in chips),Our products have dominant position in quality in LED digital display industry ,which is proved by our long-term cooperation partner: A.O. Smith, Sumsung,Supor,LG. Quality factory seeks quality products. I hope we have opportunity to cooperate with each other. If you are interested in our products you can visit our website: www.arkch.com or en.arkch.com. We would like to provide free samples if you need .SKYPE: arkjudy