Phone: +86-816-2295680
E-mail: sales@dongfang-insulation.com
Primary Producer of Specialty Resins for Global High-Tech OEMs
Operating as Sichuan EM Technology Co., Ltd. (SH.601208), we eliminate middleman volatility. Our integrated chemical reactors synthesize precision Bisphenol-A, Brominated, Phenolic Novolac, and Phosphorus-Modified Resins backed by batch-to-batch COA traceability.
Established 1966. First listed electrical insulation enterprise in China.
Multi-site production bases with continuous automated reactor lines.
Staffed by senior chemical engineers, QC specialists, and technical staff.
Supplying CCL laminators, prepreg plants, and high-voltage OEMs worldwide.
Industrial Epoxy Resin Raw Material Portfolio
Standardized polymer parameters for direct B2B resin buyers. Request your lot-specific Certificate of Analysis (COA) matching each chemical shipment.
| Model / Grade | Chemical Type | EEW (g/eq) | Viscosity (25°C) | Hydrolyzable Chlorine | Color (Gardner / APHA) | Typical Applications | Packaging Option |
|---|---|---|---|---|---|---|---|
| EMT-EP128 | Bisphenol-A Diglycidyl Ether (DGEBA) | 184 – 190 | 11,000 – 14,000 mPa.s | ≤ 200 ppm | ≤ 0.5 Gardner | Standard laminates, electrical potting, anti-corrosion coatings | 220kg Drum / 1000kg IBC / Isotank |
| EMT-EP128H | High-Purity Bisphenol-A (DGEBA) | 182 – 188 | 10,500 – 12,500 mPa.s | ≤ 100 ppm | ≤ 30 APHA | Electronic packaging, semiconductor underfills, IC substrates | 220kg Drum / 1000kg IBC |
| EMT-BR503 | Brominated Epoxy Resin (TBBPA-based) | 420 – 460 | Semi-solid / Solution (75%) | ≤ 300 ppm | ≤ 1.0 Gardner | Rigid FR-4 Copper Clad Laminates (CCL), prepreg sheets | 25kg Kraft Bag / 200kg Drum |
| EMT-PN607 | Phenolic Novolac Epoxy Resin (EPN) | 172 – 180 | 20,000 – 50,000 mPa.s (52°C) | ≤ 250 ppm | ≤ 1.5 Gardner | High-Tg thermal resistant composites, CCL, structural adhesives | 220kg Drum / Heated Tank Container |
| EMT-FR902 | Phosphorus-Containing Epoxy (DOPO-base) | 310 – 350 | Solid (Softening Pt: 65–75°C) | ≤ 150 ppm | ≤ 1.0 Gardner | Halogen-free green CCL, 5G circuit boards, flex-rigid laminates | 25kg Paper-Plastic Compound Bag |
| EMT-MD301 | MDI Modified High-Flex Epoxy Resin | 280 – 340 | Solvent Cut (70% in MEK/PMA) | ≤ 200 ppm | ≤ 2.0 Gardner | Flexible copper clad laminates (FCCL), tough prepreg varnishes | 200kg Steel Drum |
| EMT-BO205 | Benzoxazine Thermosetting Resin | Solid flake | Tg > 180°C post-cure | ≤ 50 ppm | Amber Flakes | Ultra-low Dk/Df high-frequency CCL, aerospace matrix resin | 25kg Moisture-proof Bag |
Chemical Purity & Process Control Notice:
All liquid and solid resin formulations undergo automated vacuum dehydration and continuous wiped-film molecular distillation. Hydrolyzable chlorine is determined strictly according to ASTM D1726 titrimetric method. Lot-specific Certificates of Analysis (COA) containing EEW, viscosity, hydrolyzable chlorine, and Gardner color are archived and provided with every dispatched bill of lading.
Serving High-Performance Electrical & Electronic Industries
Engineered for mission-critical downstream applications where low chloride content, reliable thermal resistance, and tight electrical dielectric constants are non-negotiable.
Standard & Halogen-Free CCL
High-purity raw resins formulated for rigid copper clad laminates (FR-4/CEM-3), yielding optimal copper peel strength, high Tg (>170°C), and solder resistance.
Explore Bisphenol-A Series
Multifunctional Novolac Systems
High cross-linking density EPN resins for automotive circuit boards, prepreg varnish formulations, structural aerospace parts, and heat-resistant tooling.
Explore Phenolic Novolac
Green Flame Retardant Resins
Reactive DOPO-modified epoxy for UL94 V-0 flame rating compliance without toxic brominated off-gassing. Essential for high-density 5G telecommunication hardware.
Explore Phosphorus Resins
Flexible Electronics & Adhesives
Specialty oxazolidone-ring modified resins providing excellent flexibility, peel strength, and electrical insulation properties for FCCL and coverlay bonding films.
Explore MDI Modified
Brominated Epoxy Series
High-purity TBBPA polymer precursors designed for stable dielectric control in high-performance computing, servers, and multi-layer FR-4 circuit applications.
Brominated Products
Electronic Packaging & IC Resins
Ultra-low total chloride formulations designed for epoxy molding compounds (EMC), semiconductor encapsulants, and surface-mount device protection.
Electronic Resins
Benzoxazine & Active Esters
Advanced low Dk/Df curing agents and resins for high-frequency millimeter-wave radar, autonomous driving systems, and ultra-low loss CCL formulations.
Specific ResinsManufacturer Verification & Quality Engineering
We are a state-accredited chemical synthesizer, not an intermediary broker. Our manufacturing facilities are validated by national engineering centers to guarantee absolute process stability.
Quality Certifications
Standardized synthesis operated under strict international management systems to ensure compliance with demanding industrial standards:
- ISO 9001:2015: Total Quality Management
- IATF 16949:2016: Automotive grade supply chain
- ISO 14001 & ISO 45001: Eco & safety compliance
- ISO 10012: Measurement management system
Analytical R&D Verification
Backed by the National Insulation Material Engineering Technical Research Center with advanced polymer characterization equipment:
- Agilent GPC / HPLC: Molecular weight distribution
- Mettler Toledo DSC / TGA: Glass transition tracking
- Automated Potentiometric Titration: EEW precision
- Shimadzu ICP-MS: Trace ionic impurities control
Direct Supply Stability
End-to-end chemical production ensures steady contract pricing, inventory protection, and rapid supply response:
- Annual Output: Tens of thousands of metric tons
- Direct Dispatch: Sealed ISO tanks & steel drums
- Custom Formulation: Solid content & solvent tailoring
- Global Export: Complete REACH & RoHS dossiers
Sichuan EM Technology Co., Ltd. (EMT)
Established in 1966 and headquartered in Mianyang, Sichuan, EMTech operates as the leading public enterprise in China's electrical insulation and specialty resin materials industry. As the operational host of the National Insulation Material Engineering Technical Research Center, our manufacturing ecosystem provides an expansive integrated supply portfolio.
Our industrial output encompasses polyester films, halogen-free polycarbonate and polypropylene films, capacitor polypropylene films, rigid & flexible laminates, mica tapes, thermosetting composites, precision coating products, molding compounds (DMC, SMC), functional PET chips (FR PET chip, anti-bacterial PET chip), impregnating varnishes, wire enamels, PVB resin & interlayers, and specialty electronic resins specially formulated for CCL laminators.
Certified under ISO 9001, IATF 16949:2016, ISO 10012, OHSAS 18001, and ISO 14001, we deliver engineered material reliability across UHV power transmission, clean energy, rail transport, consumer electronics, 5G networks, and flat panel displays worldwide.
Sustainable Chemistry for Clean Material Development
We deliver advanced materials that balance industrial expansion with strict ecological stewardship. Our manufacturing pipelines actively implement closed-loop solvent recycling, energy conservation, and halogen elimination.
Resource Stewardship
Continuous recovery processes recycling over 95% of process solvent waste and lowering primary chemical consumption.
Occupational Health & Safety
Strict OHSAS 18001 / ISO 45001 execution ensures zero workplace accidents and worker-safe handling of volatile raw components.
Clean Emissions & Effluent
Equipped with regenerative thermal oxidizers (RTO) and biochemical wastewater plants surpassing national environmental benchmarks.
Decarbonization Pathways
Systematic adoption of low-temperature synthesis reactors and clean energy consumption to pursue net-zero operational goals.
Streamlined B2B Sourcing: TDS, Samples & Commercial Quotes
Engage directly with our technical support teams. We provide rapid documentation turnarounds, pre-shipment sample dispatch, and factory-direct commercial agreements.
Request TDS / COA
Obtain technical data sheets, test methods, formulation parameters, and past production lot certificates for formula qualification.
- Complete EEW, Viscosity & Color Data
- Hydrolyzable Chlorine Titration Curve
- RoHS, REACH, and Halogen-Free Dossiers
- 24-hour turnaround via direct email
Order Lab Samples
Verify resin reactivity, solvent solubility, cure profiles, and prepreg rheology in your own compounding facilities.
- 500g to 5kg Sealed Sample Cans
- Shipped with signed batch test sheet
- Global express courier delivery (DHL/FedEx)
- Application engineering support included
Submit Formal RFQ
Request commercial container quotes (FOB/CIF) with contracted manufacturing commitments for quarterly or annual procurement.
- Flexible terms: 200kg Drums to 20-ton ISO Tanks
- Custom viscosity cuts and dilution blending
- Long-term raw material indexing contracts
- Direct OEM/ODM synthesis options
