We use the most recent in CAD program to make sure micrometer precision.  We Lower to the 1000th of the milimeter with our high precision laser CNC device and fold working with our integrated CNC Push brakes.  This helps make us Probably the most exact and precise companies in britain. https://greasetightextractductwor12345.ttblogs.com/16565046/grease-tight-extract-ductwork-things-to-know-before-you-buy