Kiyosumi Tsuchiya et al. from Tsukukuba compared performance of 2G conductors from Fujikura Ltd.; SuNAM Co. Ltd.; SuperOx Japan LLC; and SuperPower Inc.. Tsuchiya, K., A. Kikuchi, A. Terashima, K. Suzuki, K. Norimoto, M. Tawada, M. Masuzawa, N. Ohuchi, X. Wang, Y. Iijima, T. Takao, S. Fujita, M. Daibo,