Metal :

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Metal parts – sheet metal

Metal Stiffness	Metal Stiffness	Capability •>Punch •>Co-mold •>Decoration •>Insert nut •>Sub-assembly
Metal Stiffness	Metal cover

Plastic key + Metal co-mold	Plastic key + Metal + TPU co mold	Advantage •>Thin keypad •>Rigid structure •>Well ESD shielding
FIP key + Metal stiffness