In 1984, Mr. Paul Jelko founded ATT, with a commitment to manual craftsmanship. Rainbow swiftly became renowned in Europe for its iconic car audio crafted to the highest standards of sound in 1989. In 2016, Rainbow began to focus its attention on the development of new energy, eventually establishing its new energy division in China to investigate the best materials and technologies. Specializing in the development of home storage and portable power stations, Rainbow has grown into an integrated full-power energy factory that offers products such as lithium-ion batteries, uninterruptible power supplies (UPS),battery packs, EV batteries, energy storage power stations, PV inverters and solar systems. Available to provide timely and efficient one-stop solutions and OEM/ODM services.