Abstract: Provided is a wire rod for a concrete reinforcing steel fiber, a steel fiber, and a manufacturing method therefor. According to one disclosed embodiment of a wire rod for a concrete reinforcing steel fiber, the wire rod comprises, by weight, C: 0.01 to 0.04%, Si: 0.07 to 0.3%, Mn: 1.0 to 2.0%, P: 0.1 to 0.3% and the balance of Fe and other unavoidable impurities, wherein, when the radius of the wire rod is r, in a region from the center of a cross section perpendicular of the longitudinal direction to 0.95*r, the area fraction of ferrite is 90% or more, and the remainder comprises pearlite, wherein the average grain size of the ferrite may be 30 ?m or less and the colony size of the pearlite may be 10 ?m or less.

Abstract: Disclosed are a wire rod for a steel fiber having a strength of 1,500 MPa or more without performing LP heat treatment during a wire drawing process, a steel fiber and, a method for manufacturing the same. The wire rod for a high-strength steel fiber according to the present disclosure includes, in percent by weight (wt %), 0.01 to 0.03% of C, 0.05 to 0.15% of Si, 1.0 to 2.0% of Mn, 0.05 to 0.15% of P, 0.005% or less (excluding 0) of Al, 0.01% or less (excluding 0) of N, 0.03% or less (excluding 0) of S, 0.02 to 0.08% of Sn, and the remainder of Fe and inevitable impurities, wherein a microstructure is single-phase ferrite.

Abstract: The present invention relates to an internet home appliance and a method for controlling the same, or an internet home appliance system and a method for controlling the same. According to an embodiment of the present invention, there may be provided a method for controlling an internet home appliance system, the method comprising the steps of: recognizing first information by an external terminal through an information tag provided on a product to be treated: transmitting second information to a server by the external terminal by using an application that interworks with a home appliance which is registered on the server on the basis of user information and appliance information, and which is communication-connected there to: receiving third information from the server by the home appliance and setting information (product treatment information) for treating the product: and treating the product by the home appliance on the basis of the product treatment information that has been set.