There are many differences between different brand shrink tunnel. Except the configuration of the shrink tunnel, every industry has different manufacture crafts.The crafts of YUPACK is as following:

1.Sheet cutting way: there are two ways in the markets. One is shears, other one is laser cutting.Laser cutting is no limited about the sheet shape.But shears machine belongs to trenching equipment. But just suitable for simple shape.

2.Steel sheet thickness: steel sheet thickness of shrink tunnel is belong to one part of craft.Too thin thickness sheet will be not stable when working.