Since its discovery in 1986, many companies and laboratories have made efforts to commercialize Cuoxide superconductors. This was because many Cuoxide superconductors had higher critical temperatures than the liquid nitrogen boiling temperature (77.3 K). Therefore, the cost for cooling Cu-oxide superconducting systems is much lower than that for the systems using metallic superconductors such as NbTi. As a result of the introduction of the CT-OP (Controlled Over Pressure) sintering furnace in 2004, Sumitomo Electric succeeded in improving various characteristics such as critical current (Ic) and mechanical properties of Bi2223 wire. By optimizing all manufacturing conditions including powder preparation, deformation and sintering processes, this new Bi2223 wire has attained Ic = 218 A, which is the world record(1). Sumitomo Electric has also established the technique for manufacturing the long-length and homogeneous-performance wire of up to 2 km each. This remarkably innovated Bi2223 wire is marketed under the brand name DI-BSCCO. However, the specifications for all kinds of superconducting applications cannot be satisfied by high critical current only. In satisfying other types of specifications, higher mechanical strength and lower AC loss are also important properties for superconducting wires. For this reason, Sumitomo Electric is manufacturing DIBSCCO with various features , Type H (High critical current), Type S (Slim), Type HT (High critical current and Tough), Type ST (Slim and Tough) and Type AC (AC use). Type H has the same structure as the conventional high Ic wire with a cross-sectional area of around 1 mm2, but features dramatically higher Ic. Type S is manufactured at half the raw material cost because its crosssectional area is a half that of Type H. Type HT and Type ST are the high strength wires made by reinforcing Type H and Type S with metallic tapes such as stainless tapes. They have the same Ic values as Type H and Type S and show remarkably high mechanical strengths. Type AC has the lowest AC loss among all types of DI-BSCCO and is the most suitable for an AC use. The feature of each type of DI-BSCCO is summarized in Table 1.