和胜改良型合金  M303（以  3003 合金为基础）进行挤压、拉拔加工，得到高精度、高强韧、耐腐蚀的大断面薄壁矩形管/圆管，用于大功率动力的锂电池外壳。

         Hoshion has developed the M303 alloy (based on 3003 alloy) for extrusion and drawing, obtaining high precision, high tenacity, corrosion resisting large sectional rectangular tube/round tube  with thin wall for high-power lithium battery case.