Eggtd.com | Advanced Graphite & Carbon Material Solutions

About Eggtd

Chengdu Hengka Technology Co., Ltd. is a leading manufacturer and supplier of high-quality graphite, carbon, and advanced materials. With our own graphite mine, we ensure consistent quality and supply stability across all product lines.

We specialize in producing graphite products with carbon content ranging from 80% to 99.99%, and particle sizes from 500 microns down to 0.5 microns. Our advanced processing includes multi-stage grinding, flotation, chemical and electrochemical purification, and ultra-fine milling.

Our products are widely used in batteries, electronics, aerospace, medical devices, steel, chemical, and military industries. We serve over 500 domestic units and export to more than 60 countries worldwide.

Our Products

High-performance materials engineered for precision, durability, and thermal stability across industrial and technological applications.

Graphite Electrode

High-strength electrodes for electric arc furnaces, smelting, and industrial heating systems.

Carbon: 99.0% min
Density: 1.70–1.85 g/cm³
Resistivity: ≤6.5 μΩ·m
Sizes: Customizable

Graphene

High-purity graphene powder and dispersion for advanced composites, batteries, and electronics.

Layers: 1–10
Surface Area: 500–1500 m²/g
Purity: >99%
Applications: Li-ion, sensors

Ceramic Bearing

High-speed, corrosion-resistant bearings for extreme environments and precision machinery.

Material: Si3N4 / ZrO2
Max Temp: 1000°C
Non-conductive, non-magnetic
Low friction, long life

Graphite Crucible

High thermal shock resistance crucibles for melting metals and high-temperature processes.

Purity: 99.9% C
Max Temp: 3000°C
Shapes: Custom
Coating: Anti-oxidation

Flexible Graphite Pad

Compressible gasket material for high-temp sealing in pumps, valves, and flanges.

Thickness: 0.4–6mm
Temp Range: -200°C to 550°C
Chemical resistance
Low creep relaxation

Graphite Packing

Braided sealing material for rotating shafts in pumps and valves under high pressure/temperature.

Material: Pure graphite yarn
With/without lubricant
Temp: up to 650°C
Pressure: up to 40 bar

Graphite Paper

Thin, conductive sheets for EMI shielding, thermal management, and battery components.

Thickness: 0.05–1.0mm
Conductivity: High
Flexibility: Excellent
Applications: EVs, electronics

Oxidation Silicon (SiO)

High-capacity anode material for next-gen lithium-ion batteries with enhanced cycle life.

Capacity: 1200–1500 mAh/g
Particle Size: D50=5–10μm
Coating: Carbon composite
Stable voltage profile

Colloidal Graphite

Stable dispersion for lubrication, conductive coatings, and anti-static treatments.

Solid Content: 30–50%
Solvent: Water or alcohol
Particle Size: <1μm
Uniform coating

High Purity Quartz Crucible

Ultra-clean crucibles for semiconductor and solar silicon crystal growth.

Purity: >99.99% SiO₂
OH⁻: <30 ppm
Max Temp: 1650°C
Low metal contamination

Graphite Conductive Ring

Precision rings for electrical contacts, slip rings, and motor components.

High conductivity
Wear-resistant
Machined to tight tolerances
Custom alloys available

Graphite Rod

Solid rods for EDM, furnace components, and structural applications.

Diameter: 3–300mm
Length: up to 2000mm
Grade: Fine grain
Machinable to specs

Why Choose Eggtd?

We combine vertical integration, cutting-edge technology, and global reach to deliver unmatched quality and service.

Mine-to-Market Control

Ownership of raw material source ensures supply chain stability and consistent quality.

Advanced Testing Lab

Equipped with laser particle analyzers, moisture testers, and purity verification systems.

Global Distribution

Products shipped to 60+ countries with reliable logistics and documentation support.

Customer-Centric Service

Dedicated support team offering technical guidance, samples, and custom solutions.

Frequently Asked Questions

What is the difference between natural and synthetic graphite?

Natural graphite is mined and processed from ore, offering high crystallinity. Synthetic graphite is produced from petroleum coke through high-temperature graphitization, providing higher purity and uniform structure.

Can you provide custom shapes and sizes?

Yes, we offer full CNC machining and molding services to produce custom graphite and carbon components to your exact specifications.

What certifications do you have?

We follow ISO quality standards in production and testing. Material test reports (MTRs) are available for all batches upon request.

How do I request a sample?

Please visit our official website or contact us directly to request product samples. We offer free samples for qualified industrial buyers.

What are the lead times for orders?

Standard products: 7–10 days. Custom orders: 15–25 days depending on complexity. Express shipping available.

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Advanced Graphite & Carbon
Material Solutions

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