铜大缸采用树脂砂铸造，工艺好，不走形，采用62#焊条，气焊焊接跟整体铸造效果一样，还有这种焊条不与纯铜产生氧化，不会反绿锈。这就是62#焊条的价值所在。铜大缸再焊接、打磨，完成后，进行表面处理，做颜色，着色化学药腐蚀。用火枪烤到一定的温度用喷壶喷在上面，让药水吃到铜里面这样用不掉色，色泽永远都是就像刚做的一样。保留的时间上，{可以达到100年都没问题}因为药水能吃到铜里面0.5mm。
The copper cylinder is cast with resin sand, which has good technology and does not deform. 62 ᦇ welding rod is used. The effect of gas welding is the same as that of the whole casting. In addition, this kind of electrode does not oxidize with pure copper and will not reverse green rust. This is the value of 62 ᦇ electrode. The copper cylinder is welded and polished again. After finishing, the surface treatment, color, coloring and chemical corrosion are carried out. Bake it to a certain temperature with a torch, spray it on it with a spray pot, and let the potion eat into the copper. It will not fade, and the color will always be the same as that made just now. In terms of retention time, {it can reach 100 years without any problem} because the liquid medicine can eat 0.5mm of copper.

汇丰铸造出了一批批的精美铜雕工艺品，我厂铸造的产品，放置于国内各地及东南亚地区，每天观看到我厂工艺品者无计其数。在为一些知名景区铸造的大型雕塑作品，令游客驻足，让世人惊叹其铸造工艺的精湛。
HSBC has produced a batch of exquisite copper carving crafts. The products cast by our factory are placed all over the country and Southeast Asia. There are countless people who can see our handicrafts every day. The large-scale sculptures cast for some famous scenic spots make tourists stop and let the world marvel at the exquisite casting technology.