Methods for fabricating a layer or layers for use in package substrates and die spacers are described. The EPIRB terminal comprises: a sensor unit for sensing the sinking of a ship in which the EPIRB terminal is provided; a generation unit for generating a distress message corresponding to the sensed result of the sensor unit; and a transmission unit for broadcasting a distress signal including the distress message. Furthermore, guide ramps connected to the frame and in which the rollers supported by the panel open downwards, to enable the panel to drop by gravity when the handle is pulled. The polishing device includes a pressure transducer installed along the slurry supply line and adapted to detect a pressure inside the slurry supply line. Specifically disclosed is a magnetic alloy represented by the following composition formula: abHcNd. In a described embodiment, the device sorting apparatus 100 comprises a plurality of bin connectors 120 for coupling to respective bins for storing sorted devices and a rotary distribution module 102 for receiving a device 200 to be sorted and for discharging the device 200 selectively into one of the bin connectors 120 to enable the device 200 to be unloaded to the respective bin.