Kingkong 20W 30W 40W 50W and Bowling 60W 80W 100W designed in 2013, popular with many customer of all kinds of market, the quality stable and suitable for verticle installation at 3meters to 10meters. The bulbs have been got CE, RoHs, SAA, at the end of 2017, we got ETL approved. North America customer can place large order any time, we will delivery in time with high quality. Thanks for the support all the way!