Several other types of wiring systems are used for building wiring in the United States; these include corrugated metal armored cable, mineral-insulated cable, other types of power cable, and various types of electrical conduit. In industrial applications cables may be laid in cable trays.
2016: Debut with The 7th Sense and Without You. On April 4, NCT U was announced with pictures announcing members Mark and Jaehyun, later adding members Taeil, Taeyong, Doyoung, and Ten. NCT U was described as the main group of NCT.
On August 18, S.M. Entertainment announced that NCT's third unit would be called NCT Dream. The unit consists of seven members: Mark, Renjun, Jeno, Haechan, Jaemin, Chenle, and Jisung. Their first single Chewing Gum was released on August 24 and the unit had their debut stage on M Countdown on August 25.