Apr plate device

An APR plate device, comprising:

• a first holder comprising a first clamping surface, a strip-like groove, and a plurality of positioning indentations, the strip-like groove locating at the first clamping surface, the plurality of positioning indentations locating at the strip-like groove;
• a second holder, for assembling with the first holder and a gap formed therebetween, the second holder comprising a second clamping surface and a strip-like protrusion, which protrudes from the second clamping surface and corresponds to and extends toward the strip-like groove when the first holder and the second holder are assembled together;
• and
• a plurality of positioning elements, each mounted to a corresponding one of the positioning indentations and protruding out of the strip-like groove;
• wherein after the second holder is assembled with the first holder and the gap is formed therebetween, an end of an APR plate used to extend into the gap for being abutted and clamped with the end's two sides by the first clamping surface and the second clamping surface respectively, the strip-like protrusion utilized for abutting against and deforming the end of the APR plate to clamp the end of the APR plate along a direction of the extension of the strip-like protrusion, the end of the APR plate comprising a plurality of positioning holes for corresponding to the plurality of positioning elements respectively.