国家发改委近日批准发布228项行业标准。其中,机械行业有129项,建材行业有17项,电力行业有34项,汽车行业有23项,有色金属行业有2项,包装行业有5项,石化行业有18项。以上标准自2005年4月1日起实施。据悉,新标准将由有关出版社出版。其中,机械行业标准由机械工业出版社出版。国家 National Development and Reform Commission recently approved the release of 228 industry standards. Among them, there are 129 machinery industry, building materials industry has 17, 34 power industry, the automotive industry has 23, two non-ferrous metals industry, packaging industry has 5, 18 petrochemical industry. The above standard since April 1, 2005 implementation. It is reported that the new standard will be published by the relevant press. Among them, the mechanical industry standards published by the Machinery Industry Press. country