GTHH series fully automatic pre-fold and crash lock bottom folder gluers are equipment with four-folded/edged-bottom,it is able to make 2-folding, 4-folding with bottom gluing.In the pre-folding part,the first fold and the third fold can be exchanged by 180 degree or 150 degree.The second fold and the fourth fold can be molded in 180 degree, and the special design is also available.Adopting imported electrical appliances and accessories.Before and after the single inverter separate operation.Very high speed,reasonable structure, convenient and flexible operating.It is suitable for the paste process,such as  edged-wine box,medicine box,CD box,cosmetic box and French fries box etc as well as pasting the paper box without-edged-bottom.