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High Strength Fiberglass Roving for Industrial Use

S-Glass Fiber, developed by Nanjing EFG Co., Ltd., is a silicon-aluminum-magnesium system glass fiber known for its exceptional strength. Compared to alkali-free E glass fiber, S-Glass Fiber boasts a 30-40% increase in tensile strength, a 16-20% increase in elastic modulus, and a temperature resistance boost of 100-150 °C.
Glass type:
Moisture content:
  • 675yds/lb (735tex)


S-Glass Fiber by Nanjing EFG Co., Ltd.

S-Glass Fiber, developed by Nanjing EFG Co., Ltd., is a silicon-aluminum-magnesium system glass fiber known for its exceptional strength. Compared to alkali-free E glass fiber, S-Glass Fiber boasts a 30-40% increase in tensile strength, a 16-20% increase in elastic modulus, and a temperature resistance boost of 100-150 °C.

Products reinforced with S-Glass Fiber exhibit a remarkable tenfold increase in fatigue resistance. This fiber offers superior physical properties, including high strength, compressive strength, significant elongation at break, toughness, aging resistance, corrosion resistance, and excellent resin penetration.



Tenical Data

Item Unit Test Method Standard value

EFG-S-735 EFG-S-400
Linear density Tex ISO 1889:1997 735(±36.7) 400(±20)
yds/lb 675 1222
Cv. % ISO 1889:1997 <5 <5
Loss on ignition % ISO1887:1995 0.8±0.3 0.8±0.3
Moisture Content % ISO3344:1997 <0.2 <0.2
Strand Tensile Strength M Pa ASTM D 2343 >2758 >2758
Test condition
  1. Humility: 48% for EFG-S-400;  52% for EFG-S-735

  2. . Room temperature: 22ºC


Product Features:

  • High tensile strength

  • High elastic modulus

  • High compressive strength

  • Large elongation at break

  • Good toughness

  • Resistance to aging and corrosion

  • Excellent resin penetration

Product Benefits:

Our product offers exceptional strength, durability, and flexibility. It is resistant to aging, corrosion, and offers superior resin penetration for enhanced performance.

Contact us today to experience the quality and reliability of Nanjing EFG Co., Ltd.'s products.


Nanjing EFG Co., Ltd. offers a wide range of high-performance glass fiber reinforced materials suitable for various applications. Our products, including projectile shells, phenolic grilles, CNG cylinders, reinforcement rings, fiber optic cable reinforcement yarns, and sports equipment, are designed to provide exceptional strength and durability. Trust Nanjing EFG Co., Ltd. for top-quality materials that meet your specific needs.



Packaging & Shipping


Company Profile

Established in 2003, Nanjing EFG Co., Ltd. specializes in High Tensile Strength 675yds/Lb (735tex) Fiberglass Roving. Our S2 Glass Fiber products offer superior strength and durability.


Nanjing EFG Co., Ltd. specializes in glass fiber and polyester fiber non-woven mats. Our vision is to create a well-known international brand in the field of non-woven fiberglass materials. Our products, including fiberglass mats, polyester mats, coated mats, and reinforced mats, are distributed worldwide to Europe, the Middle East, North Africa, Asia, the USA, and Latin America. Customers use NJEFG® products for waterproofing, filtering, wall decoration, gypsum boards, FRP surfaces, and more. Our commitment to quality and service ensures customer satisfaction.

With a team of professional engineers and advanced production lines, NJEFG® focuses on providing customization for special demands and developing new products for the market. Every employee at NJEFG® is dedicated to their work, ensuring active and efficient service, stable quality, and a strong reputation. When you partner with NJEFG®, you are working with a professional team that delivers exceptional results.

Nanjing EFG Co., Ltd. offers a wide range of products that cater to the markets of the Middle East, North Africa, Southeast Europe, and North Europe. With a commitment to excellent customer service, NJEFG operates branch companies and joint ventures in key locations such as Hong Kong, Algeria, and Iran.




Why choose us

Welcome to Nanjing EFG Co., Ltd.

As a leading supplier of fiberglass materials in China, Nanjing EFG Co., Ltd. has over 15 years of experience in manufacturing fiberglass and polyester non-woven fabric. We are dedicated to offering a wide range of high-quality products tailored to meet our customers' needs.

Our commitment extends to providing customized, cost-effective solutions to ensure a positive and satisfying customer experience. We offer strategic planning, reliable solutions, consultancy, and detailed implementation actions to address your specific requirements.

Contact us today to learn more about how Nanjing EFG Co., Ltd. can meet your fiberglass material needs.


Nanjing EFG Co., Ltd. - Product Information

Q1: What's the Minimum Order Quantity (MOQ)?

A: The MOQ is 100SQM.

Q2: How can I request a sample?

A: We offer free A4 samples; customers only need to cover shipping costs. Alternatively, customers can provide their DHL, FEDEX, EMS, UPS courier account number for shipping. For larger sample quantities, please inquire.

Q3: How is quality control managed?

A: Our team of technical experts and experienced workers ensure strict quality control from raw materials to final packaging to deliver top-notch products.

Q4: Can products be customized?

A: Yes, customization is our specialty. Provide us with the required data, application, and quantity, and we will tailor the product to your specifications.

Q5: How long does it take to receive a sample for quality testing?

A: Typically, a sample will be ready within one week after finalizing specifications.

Q6: What is the delivery time frame?

A: Orders are usually delivered within 2-3 weeks after confirmation. Exact delivery times depend on the order quantity.

Q7: What are the payment terms?

A: We accept FOB, CIF, CFR, and DDU terms.

Q8: Are all products tested before delivery?

A: Yes, we conduct 100% testing before shipping to ensure quality.





Add: No.20, Jiangjun Ave, Nanjing, China.

Tel: +86 25 52270147      

Fax: +86 25 58321442 / 52255211  

Mob: +86 18851651909   

Whatsapp: 0086 18851651909  



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