PVC insulated & PVC sheathed Flat Cables. According to VDE 0250 type NYIFY.

Conductor	Annealed copper conductors.
Insulation	PVC rated for 70°C.
Assembly	The cores are laid side by side with web and covered with PVC-Sheathing.
Application	For wiring in dry conditions for permanent laying on plaster and under plaster.
Packing	In 100 yards, 100-meter coils or any other.