What certificated for your led downlight?
cULus Classified(E355621) & Energy Star, FCC
OKT mobile phones
Step one: Using a smart phone to install scanning code software, such as "wochacha", "Win on Quick Code” etc.
Step two: Open the scanning code software against the QR code, then you can get an interlinkage.
Step three: open the link, and then enter OKT Mobile Phone Official Website.