The various door knob locks / latches and hinges be used the zinc-aluminum alloy die-casting,iron casting,stainless steel manufacture,chromium-plating and electrophoresis painting, used in various cabinets,especially in cold storage, refrigerators, ovens, refrigerated counter, cooking cabinets, etc. Include the following series: Satety latches & inside release handle Adjustable door hinges Reversible reach-in Hinges Pressure relief ports Panel combiners Edgemount magnetic latches Edgemount mechanical latches Surface mount latches Handle senes Edge mount hinges Surface mount hinges Plane surface mount hinges Concealed spring hinges ?More details please kindly contact with us.