Degol:How many hinges should a heavy door have?

DEGOL New Product :

What is good door hinge?DEGOL tell you :1.2.0mm thickness instead of 1.6mm thickness2.No sand holes on the surface3.Opening and closing mute4.Resistant to rust, abrasion and corrosion,Calmly cope with humid environment5.suppliers of Hafele6.Full material7.Smooth opening and closing without noise8.Du

What are the advantages of door hinges