Abstract: An embodiment resin composition for shielding electromagnetic waves, based on a total weight of the resin composition, includes 20 to 80 wt % of thermoplastic resin, 1 to 50 wt % of a conductive filler, and 0.1 to 30 wt % of an additive.

Abstract: An elevator unit for transferring a tray includes a tray guide block on which a tray is seated, a wrapping connector driving member configured to elevate and lower the tray guide block, a fixed fastener connected to the tray guide block, and a corrective fastener connected to the wrapping connector driving member and configured to rotatably coupled to the fixed fastening member.

Abstract: A coolant supplying apparatus, which is configured to prevent dew condensation from being generated in a supply of coolant, and a temperature controlling apparatus and a test handler including the same are provided. The coolant supplying apparatus includes a housing having an outlet, a coolant spraying part arranged inside the housing and configured to discharge coolant around the outlet of the housing, and a dry air injection part configured to inject dry air into the housing.

Abstract: A tray elevator of a test handler includes a tray mounter on which a test tray is seated and having a support part and a through hole vertically penetrating the support part, a shaft vertically extending through the through hole of the tray mounter and configured to provide a path for elevating or lowering the tray mounter, a guide bushing including an outer surface and a groove at the outer surface, inserted into the through hole of the tray mounter, and configured to move along the shaft, and a ring inserted into the groove of the guide bushing.

Abstract: An elevator unit for transferring a tray includes a tray guide block on which a tray is seated, a wrapping connector driving member configured to elevate and lower the tray guide block, a fixed fastener connected to the tray guide block, and a corrective fastener connected to the wrapping connector driving member and configured to rotatably coupled to the fixed fastening member.

Abstract: A method of biologically producing p-hydroxybenzoic acid, and a method for producing p-hydroxybenzoic acid from lignin through chemical and biological conversion.

Abstract: A method of biologically producing p-hydroxybenzoic acid, and a method for producing p-hydroxybenzoic acid from lignin through chemical and biological conversion.