In 2001, the model of mining optical cable in the technology industry was finalized as MGTSV

In the 19th century, in the development of the cable industry, optical cables were the latter, which emerged after cable products. Initially, indoor optical cables were the standard, but gradually in the early 20th century, China's cable industry made great progress. Optical cables replaced cables for communication and developed relatively quickly. In 2001, optical cable products were mostly used for communication in mining and ore mines, where the transmission speed in mining was much faster than that of cables. Many optical cable models were designed, and in 2001, the model of mining optical cable was set to MGTSV and flame-retardant mining optical cableThe structure is to insert single-mode or multi-mode optical fibers into a loose tube made of high modulus plastic, and fill the tube with a water-resistant compound. The center of the cable core is a phosphated steel wire or a steel wire rope extruded with polyethylene. A loose sleeve (or filling rope and signal wire) is twisted around the center to strengthen the core and form a compact and circular cable core. The gaps inside the cable core are filled with water-resistant filling material, steel polyethylene bonded to the inner sheath, and then a blue flame-retardant PVC sheath is used to form the cable.

With the popularization of optical cables, mining optical cables are divided into:

1. Central bundle tube type: from inside to outside, it consists of optical fiber, optical fiber paste, loose tube, thin steel wire (mostly wrapped in a circle), steel strip, PE inner protective layer, and flame-retardant sheath (blue)

2. Layer twisting type: from inside to outside, the central reinforcement (usually made of phosphated steel wire), optical fiber, optical fiber paste, loose tube, cable tie, cable paste, steel strip, and PE inner protective layer are arranged in sequence,

Flame retardant sheath (blue)