The invention relates to modifications of a non-ammoniacal thiosulfate process of leaching precious metals from precious metal-containing ores. The architecture employs channel bonding to deliver more bandwidth than any single communication channel can carry. Preferably, in the General Formula, r and s are 0; m and n are 0; or n and r are 0, and more preferably, one of m and s in the General Formula is 1. The vertical magnetic field generating means is formed by vertical magnetic field electrodes provided in a vacuum container of each of the vacuum circuit breaker unit units or by an external coil provided on the outer circumference of each vacuum container. A composite obtainable from the prepreg as well as the use of the composite or prepreg are also disclosed. The present invention provides an electric-wire processing machine which can eliminate exchanging operations of electric-wire nozzle units depending on diameters of an electric wire, and shortens the operation time required for step-exchanging.