The light source of the product is consisted on a string of averagely spaced LEDs, by which the rays emitted shoot through the in-laid converging layer of the encapsulating crust. The product is characterized with the advantages of high brightness and durable lifespan with the creatively applied converging layer combining the special structure. The product, working under the voltage of 24V, is highly flexible with the minimum cutting unit of 3 inches and is safe, portable and easy installed.