Chontdo Electronics is a professional LED display & LED lighting OEM&ODM. We have passed ISO9001:2000/CE-high quality &low price Dear Sir or Madam,Hello ,We are a professional LED display & lighting manufacturer in Beijing China ,Our products have passed CE/ISO9001:2000 and applied on a lot of our national projects like 2008 Beijing Olympic and other countrys projects.We can also produce custom ...