Gray (unit) Gray (unit) The gray (symbol: Gy) is a derived unit of ionizing radiation dose in the International System of Units (SI). It is defined as the absorption of one joule of radiation energy per kilogram of matter. It is used as a unit of the radiation quantity absorbed dose which measures the energy deposited in a unit mass at a certain position, and of the radiation quantity kerma, which is the amount of energy that is transferred from photons to electrons per unit mass at a certain position. The corresponding cgs unit to the gray is the rad (equivalent to
National Modern Energy Holdings Battery Technology. The battery plant manufactures batteries for a producer of electric urban buses but will later deliver to NEVS for the planned electric vehicle based on the Saab 9-3. National Modern Energy Holdings National Modern Energy Holdings Ltd. (NME) is a British Virgin Islands-registered, Hong Kong-based holding company, which owns National Electric Vehicle Sweden (NEVS) together with Japan-based Sun Investment LLC. NEVS acquired the assets of Saab Automobile AB, Saab Automobile Powertrain AB, and Saab Automobile Tools AB from a bankruptcy estate. National Modern Energy Holdings has operations in China, Macau, and Hong Kong. The owner of the holding