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JC/T452—2009《通用水泥质量等级》JC/T452—2009《通用水泥质量等级》标准将取代2002年颁布的JC/T452—2002《通用水泥质量等级》标准,在技术上实现了进步。水泥行业产能过剩、行业门槛低以及市场混乱
JC / T452-2009 “Common Cement Quality Grade” JC / T452-2009 The “Common Cement Quality Grade” standard will replace the JC / T452-2002 “Common Cement Quality Grade” standard promulgated in 2002 and progress has been made in technology. Overcapacity in the cement industry, low industry barriers and market turmoil