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Featured Products

Protect Your Polymers with Our High-Performance Flame Retardants

Our portfolio includes halogen-free flame retardants, ceramic-forming additives, smoke suppression and char-formation systems, ATO replacement technologies, and anti-dripping solutions. Each product is engineered for high-performance polymers, providing UL94 V-0 ratings, thermal stability, and mechanical integrity. Designed for plastics, rubbers, and composites, our additives ensure environmental compliance with RoHS and REACH, while enabling safer and more reliable applications.

Flame Retardant Solutions

Reduce Smoke, Enhance Flame Retardancy, and Improve Polymer Performance

Dstone’s advanced flame retardant solutions are designed for electronics, electric vehicles, wire & cable, automotive components, aerospace, and industrial polymers. Our halogen-free flame retardants and ceramic-forming additives provide superior thermal protection and flame resistance. The smoke suppression and char-forming systems reduce toxic emissions while enhancing polymer performance. Additionally, our ATO replacement and anti-dripping solutions enhance flame retardancy and thermal stability in EV battery casings, cable insulation, and high-performance plastic housings.

EV & New Energy Systems

Composites & Foam Materials

Electronics & Electrical

Power Cables & Energy Transmission

Automobile Manufacturing & Home Appliances

About Dstone Materials

Innovation-Driven Flame Retardant Solutions Backed by Expert R&D

Dstone is a leading provider of advanced fire-safe materials. Our R&D center, supported by CNAS-ready laboratories and pilot-scale equipment, enables rapid development and testing of custom formulations. Our team of PhDs and experts from top universities focuses on halogen-free flame retardants, ceramification additives, smoke suppression & char formation systems, ATO replacement, and anti-dripping solutions. We ensure every product meets high safety and performance standards while driving innovation in polymer fire protection.

30 years of

industry experience

5000

5,000 ㎡

R&D building

7 major

product series

Our Key Advantages

Proven Expertise and Reliable Solutions in Flame Retardants & High-Performance Polymers

Industry Experience

With over 30 years of experience in flame-retardant and fire-resistant materials, Dstone supports safe and effective polymer solutions across diverse applications.

Consistent Quality

We deliver standards-compliant flame retardants with careful quality control to ensure reliable performance.

Innovation in Technology

Dstone creates innovative solutions and materials to optimize polymer performance and flame-retardant properties.

R&D Strength

Our 5,000 m² R&D center enables efficient prototyping, testing, and tailored solutions.

Competitive Pricing

We provide cost-effective flame retardants and additives, balancing quality and price.

Tailored Solutions

Customized flame retardant and polymer solutions help meet the unique requirements of each project.

From Our Blog

Learn About Smoke Suppression, ATO Replacement & Advanced Flame Retardants

Stay informed with our latest technical insights, case studies, and industry trends.

What materials can the company primarily process?

We specialize in high-precision planar polishing, processing materials that span both the visible and infrared spectral ranges: ① Visible‑light/laser optical materials: optical glasses (such as K9 and BK7), quartz glass (including JGS1, JGS2, and JGS3), Corning series (e.g., 7980, 7979), and ZF‑series heavy flint glasses, among others. ② Infrared optical materials: single‑crystal germanium (Ge) and single‑crystal silicon (Si). These two materials are characterized by high hardness—silicon has a Vickers hardness of approximately 1150, while germanium is around 780—and relatively brittle textures, making them key strengths of our core manufacturing processes.

2026-08-25

What level of precision can be achieved with surface polishing?

We specialize in high-precision flat‑surface machining. Our standard batch‑production specifications are as follows: ① Surface figure accuracy: PV (peak-to-valley) can reach λ/20 or better (λ = 632.8 nm), depending on the material and process. ② Surface finish: Can achieve 10/5 or higher, with no surface defects such as pitting or scratches. ③ Parallelism: Can be controlled to within seconds of arc or to a thickness difference of sub‑micron levels, according to customer‑specified drawing requirements.

2026-08-25

Why are the processing costs of infrared materials (such as germanium and silicon) higher than those of glass?

This is primarily determined by the material’s physical properties: ① High hardness and brittleness: The Knoop hardness of germanium and silicon is significantly higher than that of ordinary optical glass, resulting in longer polishing and grinding times and greater wear on grinding wheels and abrasives. ② Susceptibility to chipping and breakage: Due to their high hardness and brittleness, infrared materials are prone to stress‑induced chipping during machining, increasing the risk of scrap. ③ High unit cost: The per‑gram cost of infrared materials far exceeds that of conventional glass, and their processing requires specialized cooling fluids and contamination‑control measures.

2026-08-25

Trusted By Leading Partners

Global Brands Rely on Dstone Materials for Flame Retardant & Polymer Solutions

Dstone Materials collaborates with top companies across automotive, electronics, EV, battery & energy, and industrial sectors. Our clients rely on us for flame retardant, ceramification, smoke suppression & char formation, ATO replacement, and anti-dripping solutions. Displayed partner logos reflect industry trust, recognition, and our proven track record in delivering high-performance polymer safety solutions.

Contact Us

Get Expert Guidance on Flame Retardants & Custom Polymer Solutions

Contact Dstone Materials to discuss project requirements, request samples, or consult on custom flame retardant and polymer solutions. Our team offers professional guidance on halogen-free flame retardants, ceramic-forming additives, smoke suppression & char formation, ATO replacement, and anti-dripping technologies. Submit your inquiry via our form to explore all available solutions.

Shanghai Factory Address: No. 306, Shenxia Road, Malu Town, Jiading District, Shanghai

Suzhou Factory Address: Building No. 6, No. 26 Anfu Road, Dongbang Town, Changshu City, Jiangsu Province

Contact: Mr. Zhou

Phone: 021-59962896

Mobile: 13681782636

Email: zhouqh@shxfop.com.cn

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