[Properties]: smooth surface with silver bright, metal luster, soft and good extension.
[Properties]: smooth surface with silver bright, metal luster, soft and good extension.
：表面光洁，呈银白色，具有金属光泽，柔软，延展性强。
[Properties]: smooth surface with silver bright, metal luster, soft and good extension.
：表面光洁，呈银白色，具有金属光泽，柔软，延展性强。