Huasun is a small factory which combined about the 100 workers, estanblished about 5years.studing on LED technology, manufacture, reserch and development cnetre and the quality control, individuation ***** production&＃039;s advantages is difference with outhers LED disaplay, we can folded and Hang which is conviently to carry away(the traditional hadware LED Screen is hard to install and diffcuilt to renewal part and heavy to delivery)because of difference Pitch which willl be suited for difference surroundings and application like advertising, concert and outdoor or indoor. work principle: our majority production is made of by SMD, both indoor and outdoor&＃039;s brightness are comfortable for eyes. difference size Led Curatain will be combined with difference controller, so it will be worked by computer, led curtain and ***** will receive signal from the computer and send out to the curtain. the singal so was circle.you can contact with this webiste: http://*****/user/ledmarketing to enjoy our production&＃039;s ***** whole production was guarentted by Rohs, CE, SGS, ***** can you login our webiste(*****) and find you satisfied production. and i will quotation for you.