‍‍1. Are you a factory or a trading company? We are a professional manufacturer of fiberglass woven roving, also offering trading services for related fiberglass products. We provide one-stop sourcing solutions for our customers. 2. What products do you offer? Our main product is fiberglass woven roving. We also supply chopped strand mats, surface mats, fiberglass roving, and other composite materials. 3. Can you provide customized products? Yes. We offer customization for weight, density, width, and resin compatibility to match your project requirements. 4. What industries are your products used in? Our materials are widely used in shipbuilding, wind energy, construction reinforcement, pipeline wrapping, and automotive parts. 5. What is your minimum order quantity (MOQ)? Our standard MOQ is one full container load (20GP or 40HQ). We support mixed product loading to help you save on shipping costs. 6. What shipping methods do you offer? Mainly sea freight for cost-effectiveness and safety. Air freight or courier service is available if needed. 7. Can I get samples? Yes, samples are available for free. Shipping costs can be discussed. 8. How do you ensure product quality? We are ISO-certified and conduct strict quality inspections before shipment. Test reports and third-party certifications are available upon request. 9. Do you have export experience? Yes, we export to Vietnam, Indonesia, Thailand, Europe, the Middle East, and other regions, with deep experience in international standards and logistics. 10. What payment methods do you accept? We accept T/T bank transfer and L/C. Other methods can be negotiated. 11. Can you assist with certifications or third-party inspections? Yes. We can help with ABS, DNV, BKI certifications, and arrange third-party inspections if required. 12: Can I use woven roving alone without chopped strand mat? Technically yes, but it is not recommended for most applications. Woven roving has relatively poor inter-laminar adhesion on its own. Alternating WR with CSM bonding plies significantly improves delamination resistance under cyclic loading. 13: What weight of woven roving should I use for boat building? For general-purpose boat hull construction with hand lay-up, 600–800 g/m² is the most common range. Heavier fabrics (800–1,000 g/m²) are used for larger vessels where rapid thickness build-up is important. Lighter weights (400 g/m²) are used in small dinghies or where fine detail work is required. 14: How much resin do I need per kilogram of woven roving? For hand lay-up with polyester resin, expect a resin-to-fiber ratio of approximately 1.5:1 by weight (i.e., 1.5 kg of resin per 1 kg of woven roving). This is significantly lower than chopped strand mat, which typically requires 2:1 to 2.5:1. 15: What is the minimum order quantity for custom widths? This varies by manufacturer. Shantong Fiberglass can accommodate custom width requirements; contact our team at shirley@stfiberglass.com to discuss MOQ and lead times for non-standard specifications. 16: Does fiberglass woven roving require special health and safety precautions? Yes. Glass fiber dust and airborne filaments can cause skin, eye, and respiratory irritation. Always use appropriate PPE: nitrile gloves, safety glasses, and a dust mask (minimum FFP2/N95) when cutting or handling dry fabric. Ensure adequate ventilation when working with uncured resins. Follow your local health and safety regulations for working with composite materials. Summary Fiberglass woven roving is one of the most versatile and cost-effective structural reinforcement materials available to composite fabricators. Key takeaways from this guide: ·       Plain weave for flat/standard structures; twill weave for curved geometry ·       Use 600–800 g/m² for mainstream structural work; lighter for detail, heavier for fast build-up ·       Always use CSM bonding plies between woven roving layers for optimal inter-laminar performance ·       Confirm sizing chemistry matches your resin system before ordering ·       Store below 30°C and 70% RH, use within 12 months Jiashan Shantong Weaving Co., Ltd. has been supplying fiberglass woven roving and FRP reinforcement materials to composite manufacturers worldwide since 2002. Our products are manufactured in Jiashan, Zhejiang — at the heart of China's composites supply chain — and exported to buyers across Asia, Europe, and the Americas. Request a quote or technical data sheet: shirley@stfiberglass.com | WhatsApp: +86 136 1673 8833

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