1. Basalt fiber untwisted roving is a basalt fiber product made by combining multiple parallel strands or single strands of parallel strands without twisting. 2. Basalt fiber textile yarn is a yarn made of multiple basalt fiber precursors through twisting and doubling. The diameter of the monofilament is generally 9-17μm. Textile yarns can be roughly divided into weaving yarns and other industrial yarns; weaving yarns are mainly bobbins and bottle-shaped cheeses. Continuous basalt textile yarn is made of multiple basalt strands by primary twisting (usually the filament diameter is under 9μm). Continuous basalt textile yarns can be divided into weaving yarns and industrial yarns, and weaving yarns are usually made into cylindrical or milk bottle shape packages. Fields of application: - Fabrics and tapes resistant to acids, alkalis and high temperature; - Base cloth of needled felt; - Base cloth for electric insulation board; - Electric insulating yarns and threads; - Advanced heat-resistant and chemical-resistant fabrics; - Advanced insulation materials; - Unidirectional fabrics with high temperature resistance, high elastic modulus, and high strength; - After the special surface treatment, the yarn for Weaving fabrics with radiation resistance and heat resistance at (650-980 C).