Abstract: A holding device adapted to a casing of an electronic device is disclosed. The holding device includes a holding body and at least one tenon structure. The holding body is separately installed in an inserting slot on the casing. The at least one tenon structure protrudes from the holding body, and the at least one tenon structure is for providing a place for force to be applied, so as to activate the holding body to separate from the inserting slot. The at least one tenon structure is further for inserting into at least one engaging slot on the casing, so as to fix the holding body on the casing for holding an object.

Abstract: A holding device adapted to a casing of an electronic device is disclosed. The holding device includes a holding body and at least one tenon structure. The holding body is separably installed in an inserting slot on the casing. The at least one tenon structure protrudes from the holding body, and the at least one tenon structure is for providing a place for force to be applied, so as to activate the holding body to separate from the inserting slot. The at least one tenon structure is further for inserting into at least one engaging slot on the casing, so as to fix the holding body on the casing for holding an object.

Abstract: A pedestal supporting a substrate in a plasma chamber. The pedestal includes an insulating base, a conductive layer overlying the insulating base, and a ceramic cover incompletely covering the conductive layer. The conductive layer is covered when the pedestal supports the substrate.