Import 75tex Glass Fiber Yarn — Buy in wholesale FOB from Supplier in China

Qinhuangdao Senzhong Science And Technology Co. produces this 75TEX glass fiber yarn from molten glass balls drawn into filaments, then wound and woven into continuous yarn form. The 75TEX designation indicates a linear density of 75 grams per 1000 metres, a standard metric count in textile glass reinforcement. The yarn consists of multiple E-glass filaments bonded by sizing to permit handling, winding, and subsequent processing into fabrics, rovings, or direct reinforcement forms. This product serves as a fundamental input for electrical insulation laminates, industrial filtration media, and corrosion-resistant composite structures.

Glass fiber yarn at this tex count typically comprises filaments of 9 to 13 micron diameter, with E-glass composition providing 72-73% SiO2, 12-14% Al2O3, and 8-10% CaO plus MgO combined. The sizing chemistry, critical for compatibility with thermoset resins or thermoplastic matrices, is not specified in the source and must be confirmed with the supplier. Typical breaking strength for 75TEX E-glass yarn ranges from 30 to 45 cN/tex depending on filament diameter distribution and sizing adhesion. Moisture content, typically controlled below 0.1% after production, affects resin wet-out and should be specified for humidity-sensitive applications.

Primary applications include electrical insulation material, industrial filter cloth, anti-corrosion and moisture-barrier layers, heat and sound insulation, and vibration-damping composites. The yarn is also feedstock for reinforced plastics, reinforced gypsum board facings, and FRP products such as pipes, tanks, and profiles. Organic coatings applied to the glass fiber can improve flexibility for packaging cloth, window screen, wall covering, protective clothing, and insulation quilt applications. Buyers typically include laminate manufacturers, composite fabricators, filtration system suppliers, and construction material producers. MOQ, lead time, and packaging details require direct confirmation with Qinhuangdao Senzhong.

Qinhuangdao Senzhong Science And Technology Co. is located in Qinhuangdao City, Hebei Province, China, postal code 066000. The supplier holds a harbor trust tier on the platform, with response rate and average response hours both reported as zero. This lack of response data means buyers must initiate direct contact to assess communication reliability and technical support capability. The company's name includes 'Science And Technology,' suggesting a stated focus on technical development, though the listing provides no specific R&D credentials, patent information, or laboratory accreditation to substantiate this positioning.

The source description outlines a broad product application range spanning electrical insulation, filtration, anti-corrosion materials, construction reinforcement, and coated flexible textiles. This breadth indicates either substantial manufacturing scale across multiple glass fiber product lines or trading activity beyond direct production. No factory size, annual output, years in operation, or specific quality certifications are stated in the source material. Buyers should request documentation of manufacturing scope, quality management system certification, and any product test reports relevant to their end-use application. The Hebei location places the supplier in a northern Chinese industrial zone with rail and port access via Tianjin or Qinhuangdao port itself.