Differences between the mould type and band type spiral duct formers

Here's the differences between the mould type and band type spiral duct formers!!

2. Durability. This is not I said but we have collected many voices of customers using these two type saying that band type would turn into scraps easily

and especially when they are not from big brands like Spiro.

Eventually they all started to use mould type former and they are really in good fuction for long using period!
3. Convinience. Mould type might have to change moulds when you want to shift forming diameter

and band type have to set up diameter. At this point,band type could be a little bit better, yet not much.
4. Price.  Mould type is obviouly more expensive and our current price is around USD17500/set including 5sets of moulds.

And each further mould will be charged USD400-USD850 due to different sizes.  

Yet one set of band type spiral tube former is about USD13500/set in general.