氧化铅

 Large pore alumina ball catalyst carrier
Large pore alumina ball catalyst carrier 卖方: 氧化铝 large pore alumina catalyst carrier with excellent surface properties, such as large surface area...
lead ingot
lead ingot 卖方: Tianjin Kaiyuanxiang Import & Export Co.,Ltd. 主要应用于制造业,电力方面。具有高传导性,高能等特点。 散装 或者真空包装。