... , low consumption 4,Indoor or outdoor Yellow led resin solid letter sign Shenzhen Boncan software technology co., Ltdhttp://boncan.en.alibaba ... CE/UL/ROHS certificate) 5. Material white acrylic 6. Double letter 7. Accept customization. (0~9 and A~Z) 8.inner ... a manufacturing and trading company, manufacture all kinds of led letter signs(including backlit led sign,frontlit led sign,stainless steel ...