专家影片：罗德·罗兰解释为什么金属是很有用的建筑材料。

This video highlights the enduring advantages of metal in manufacturing, emphasising its versatility, durability, and ease of shaping through limited tooling. It explains how metals like stainless steel and copper are practical, long-lasting choices for products such as sinks and water tanks, showcasing their resilience over time. Learners will gain insights into the practical applications and benefits of working with metal compared to plastics.