basic introduction
　　Shield by the outrigger and cover body composition, outrigger and cover body for the active connection, the shell is spherical crown. Mainly used in mobile phones, GPS and other fields, is to prevent electromagnetic interference (EMI), the PCB board components and LCM from the shielding effect.
　　Shield cover, English name: shield cover / case / bracket, by the outrigger and cover body, legs and shell for the active connection; cover the ball crown. This component is mainly used in mobile phones, GPS and other fields, is to prevent electromagnetic interference (EMI), the PCB board components and LCM from the shielding effect. The shield material is generally 0.2mm thick stainless steel and copper-nickel alloy for the material, which is a kind of foreign white copper is easy on the tin metal shielding material. The use of SMT chip should consider the design of suction cups.