Provided are glass compositions uniquely applicable for the preparation of ultrafine fibers for filtration and separation applications. The signal transmission block is disposed in a first chip and configured to transmit fuse information in synchronization with transmission control signals. The light aromatic solvent and the volatile hydrocarbon solvent both can be recycled and used in multiple extractions. A thermo-hardening resin includes a friction conditioner, and is impregnated to the friction member.