A state-owned glass production enterprise introduces the strategic investor to carry on the assets reorganization, including the purchase of two float glass production lines with subsequent technology transformations and the construction of a new float glass production line with domestic leading technology The fuel consumption structure has changed from coal-burning to natural gas or fuel oil. The following auditing procedures were followed according to Chinese national standards. These procedures include constituting an ordinance on energy management, strengthening the energy measurement and data statistical system, and improving production lines as well as energy-saving measures. Production scale expanded approximately twice during the period of audit Comprehensive energy consumption was 2 58 ton coal equivalent (tce) at aqual in heat value (AHV refers to energy consumed to generate each kWh of electric power, each m(3) of oxygen, nitrogen, hydrogen, or each kg of steam. The term of AHV provides a unification measurement criterion for fossil fuels consumed before the energy transformation) account per 10,000 Yuan output value, and 2.17 tce at heat value equivalent (FIVE) account. Comprehensive energy consumption per unit of product was 15.35 kg coal equivalent (kce) per weight box. The percentage of energy cost among total cost reduced from 51 19% in 2007 to 46.48% in 2008. Consequently. the comprehensive energy conversion level holds a leading position among peers in China. (C) 2010 Elsevier Ltd. All rights reserved