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Global Leader in Silica Fume & Advanced Construction Materials

Henan Langhua New Materials Co., Ltd. (HLNM) – trusted worldwide supplier of MicroSilica, Amorphous C12A7, Polycarboxylate Superplasticizers, and specialty admixtures. OEM, ODM & R&D solutions available.

Silica Fume Packaging
Henan Langhua New Materials Facility

About HLNM

Henan Langhua New Materials Co., Ltd. (HLNM) is the worldwide leading supplier of MicroSilica and Silica Fume, offering Undensified, Semi-Densified, and Densified types. We specialize in high-performance construction materials including Amorphous Calcium Aluminate (C12A7), Polycarboxylate Superplasticizers, and Disodium Methanedisulfonate.

Our mission is simple: “China's new building materials embrace the world!” With advanced production capabilities and strict quality control, we ensure fast delivery and consistent product excellence for global partners.

  • OEM & ODM Supported
  • R&D Solutions Available
  • Mass Production = Faster Delivery
  • Eco-Friendly Packaging Options
Explore Our Product Range

Our Featured Products

Premium-grade construction materials engineered for performance, durability, and innovation. All products available in various packaging options including water-soluble paper bags, valve bags, kraft paper, and ton bags.

Undensified Silica Fume

Undensified Silica Fume

High-purity amorphous silica powder, ideal for UHPC and high-strength concrete applications.

  • SiO₂: ≥85%
  • Loss on Ignition: ≤3%
  • Surface Area: 15–20 m²/g
  • Form: Free-flowing powder
MicroSilica

MicroSilica

Ultra-fine pozzolanic material enhancing strength, durability, and impermeability in concrete.

  • SiO₂: ≥90%
  • Color: Gray to off-white
  • Particle Size: < 1 μm
  • Application: High-performance concrete
Disodium Methanedisulfonate

Disodium Methanedisulfonate

High-purity chemical additive used in specialty concrete formulations and industrial processes.

  • Purity: ≥99%
  • Molecular Formula: C₁H₆Na₂O₆S₂
  • Solubility: Water-soluble
  • Use: Admixture stabilizer
White Silica Fume

White Silica Fume

Premium white-grade silica fume for architectural concrete and aesthetic applications.

  • SiO₂: ≥95%
  • Color: Bright white
  • LOI: ≤2.5%
  • Application: Precast, exposed concrete
99.9 White Silica Fume

99.9 White Silica Fume

Ultra-high purity white silica fume for critical applications requiring maximum performance.

  • SiO₂: ≥99.9%
  • Color: Pure white
  • Surface Area: 18–22 m²/g
  • Use: UHPC, nuclear shielding
Amorphous Calcium Aluminate

Amorphous C12A7

Reactive calcium aluminate for rapid setting, expansion control, and sulfate resistance.

  • Formula: 12CaO·7Al₂O₃
  • Reactivity: High
  • Application: Refractory, repair mortars
  • Form: Fine powder
Polycarboxylate Superplasticizer

Polycarboxylate Superplasticizer

High-efficiency water reducer for self-consolidating and high-flow concrete.

  • Water Reduction: Up to 40%
  • Slump Retention: Excellent
  • Dosage: 0.1–0.3%
  • Form: Liquid or powder
Concrete Admixtures

Concrete Admixtures

Custom-formulated drymix and liquid admixtures for enhanced workability and durability.

  • Types: Air-entraining, retarders, accelerators
  • OEM: Available
  • Packaging: 25kg bags, IBC totes
  • Standards: ASTM C1240, EN 934-2

Why Choose HLNM?

Manufacturer Direct

As a direct manufacturer, we offer competitive pricing, OEM/ODM support, and full R&D collaboration.

Fast Global Delivery

Mass production capabilities ensure short lead times and reliable worldwide shipping.

Eco-Friendly Packaging

Water-soluble paper bags, recyclable kraft, and ton bags meet environmental standards globally.

Quality Assured

Strict QC protocols ensure every batch meets international standards for purity and performance.

100+
Global Clients
20+
Countries Served
15,000+
Tons Annual Output
15+
Years Experience

Latest Applications

UHPC

Ultra-High Performance Concrete with enhanced strength and durability using silica fume.

Bridges

Long-span bridges benefit from reduced permeability and increased service life.

Tunnels

Improved resistance to aggressive environments in subway and highway tunnels.

Dams

Critical infrastructure protected with low-permeability, high-durability concrete.

Frequently Asked Questions

What is Silica Fume?

Silica fume, also known as microsilica, is a byproduct of silicon and ferrosilicon alloy production. It is an ultra-fine, amorphous silica powder used as a pozzolanic material in high-performance concrete.

How is microsilica produced?

Microsilica is collected from the exhaust gases of electric arc furnaces during the production of silicon metal and ferrosilicon alloys. The vaporized silica condenses into fine particles.

Why should silica fume be densified?

Densification reduces the bulk volume of silica fume, making it easier and more cost-effective to transport and handle, while maintaining its chemical properties.

How does microsilica work in concrete?

Microsilica reacts with calcium hydroxide in cement paste to form additional calcium silicate hydrate (C-S-H), improving strength, durability, and reducing permeability.

Do you offer OEM services?

Yes, as a manufacturer, HLNM supports OEM, ODM, and custom R&D solutions for global partners.

Get in Touch

For inquiries, samples, or technical support, visit our official website to connect with our team.

Phone: +86-19939356839

Email: randall@microsilicafume.cn

Address: North 86, Jingsan Road, Zhengzhou, 450008, China

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