Clean shed structure: its material to 40*40/40*80mm industrial aluminum profile as framework, used wind machine filter network sent wind unit FFU sent wind, around with anti-electrostatic drape or anti-electrostatic plexiglass Board, top Department bedding key sewing blind Board, formed a key sewing district, internal purification level can up 10000-100 level; special applies Yu workshop within local purification level requirements high of regional, as line job regional, and high accuracy products assembled district.