About Mingfa — Calcium Silicate Insulation Manufacturer China Since 1991
1. Company Profile
Laizhou Mingfa Insulation Materials Co., Ltd. is a specialized calcium silicate insulation manufacturer in China, established in 1991 and headquartered on Laizhou Bay in the Jiaodong Peninsula, Shandong Province — the world's primary production hub for calcium silicate thermal insulation materials. The company operates two production bases: the Laizhou headquarters and a second facility in Sishui County, Jining City (Surabaya Mingfa Jinyu Thermal Insulation Material Co., Ltd.). The legal representative is Sun Xiangyun.
With fixed assets of 46.24 million yuan, current assets of 78.11 million yuan, and a total area of 108,000 square meters, Mingfa employs approximately 560 people. As a China calcium silicate factory with patented technology, the company integrates R&D, production, engineering, and service of thermal insulation panels and related application products. Mingfa has grown into one of China's earliest and most recognized professional high-temperature calcium silicate insulation manufacturers, relying on independent core technology and maintaining strong market competitiveness.
The company specializes in asbestos-free xonotlite high-temperature thermal insulation materials, with product series covering standard type, high-temperature type, coating type, high-purity type, and high-strength type for service temperatures from 650°C to 1100°C. As a dedicated calcium silicate board manufacturer — not a diversified generalist — Mingfa has built deep domain expertise over three decades, distinguishing itself from larger but less focused competitors.
2. Company History — Three Decades of Specialization
Awarded "National New Product" by the State Science & Technology Commission for pioneering calcium silicate insulation technology.
Laizhou Mingfa Insulation Material Co., Ltd. officially registered and established. Won First Prize for Scientific & Technological Progress from the Ministry of Building Materials.
Won Third Prize for National Scientific & Technological Progress. Recognized as "Double 500" Excellent Energy-Saving Product by three state-level commissions.
Began international expansion. Products exported to North America, Europe, Middle East, and Southeast Asia. Established reputation as a reliable calcium silicate insulation supplier for global industrial projects.
Opened second production base in Sishui County, Jining. Recognized as "High-Tech Enterprise" by Shandong Provincial Science & Technology Commission. Won "Shandong Famous Trademark" and "Contract & Promise-Abiding Enterprise" awards.
Holds 14 national patents and 5 high-tech achievements. Cumulative exports exceed 360,000 m³ to 70+ countries. Continues investing in R&D to advance xonotlite calcium silicate technology.
3. Factory Overview — Production Infrastructure
As a dedicated calcium silicate board production factory in Shandong, Mingfa operates two manufacturing bases with comprehensive production infrastructure. The total facility spans 108,000 m² and houses a fully integrated production line — from raw material processing through to finished product packaging.
Total Facility Area
Skilled Employees
Annual Production Capacity
Tunnel Drying Kilns
Reaction Kettles
Vacuum Filter Presses
Key Production Equipment: 15 × 30m³ reaction kettles | 8 × 400-ton vacuum filter presses | Multiple 100-ton hydraulic presses | 9 × 62m tunnel drying kilns | 3 × 2.5 MPa autoclave boilers | 9 hot air furnaces | CNC sanding & finishing lines | Automated packaging systems.
Both production bases operate under the same ISO 9001-2015 quality management system, ensuring consistent product quality regardless of which facility fulfills an order. The Laizhou headquarters — located just two hours from Qingdao port — handles primary production and export logistics, while the Sishui facility provides additional capacity for large-volume orders.
4. Xonotlite Manufacturing Process
Mingfa's products are based on xonotlite (6CaO·6SiO₂·H₂O), the preferred calcium silicate hydrate phase for high-temperature insulation. Unlike tobermorite-based products that degrade above 650°C, xonotlite undergoes topotactic transformation to wollastonite only at 750–800°C, giving it exceptional dimensional stability and reliable performance up to 1050°C. This is what distinguishes a true calcium silicate insulation manufacturer from general building material suppliers.
All Mingfa products are 100% asbestos-free, reinforced with alkali-resistant glass fibers and carbon fibers for mechanical integrity.
Raw Material Preparation
High-purity calcareous (CaO) and siliceous (SiO₂) sources are precisely proportioned at a controlled CaO/SiO₂ molar ratio of 0.85–1.00 — critical for achieving the target xonotlite crystal phase. Reinforcing fibers are integrated at this stage.
Gel Reaction & Molding
Raw materials react in 30m³ kettles at 80–230°C to form a tobermorite-gel precursor. The slurry is filter-pressed at up to 400 tons to achieve the target bulk density (170–900 kg/m³), then shaped into boards, pipes, or custom profiles.
Autoclave Curing
Shaped products are loaded onto kiln cars and cured under saturated steam at 190–220°C and 12–18 bar pressure for 5–8 hours. This is where the tobermorite precursor transforms into interlocking xonotlite crystals — the key to the product's thermal performance.
Drying, Finishing & QC
Cured products pass through 62m tunnel drying kilns at 150–200°C. CNC sanding achieves precise thickness and surface finish. Every batch undergoes density, compressive strength, thermal conductivity, and shrinkage testing before release.
5. R&D and Technical Strength
Mingfa's technical capabilities are anchored by partnerships with the China Academy of Building Materials Science (CBMA) and the Sichuan Fire Science Research Institute of the Ministry of Public Security, complemented by the company's own in-house scientific research institute. This combination of national-level research collaboration and internal R&D is rare among calcium silicate insulation manufacturers in China and has produced 14 national patents and 5 recognized high-tech achievements.
R&D Facilities
- R&D Center — new product development & formulation
- Laboratory Furnace — high-temperature performance testing
- Raw Material Laboratory — incoming material qualification
- Sedimentation Analysis — particle size distribution
- Thermal Conductivity Testing — guarded hot plate method
- Mechanical Testing — compressive & flexural strength
- Microscopy Analysis — crystal phase verification (XRD/SEM)
Key Technical Achievements
- 14 national invention & utility model patents
- 5 provincial/ministerial high-tech achievement certifications
- "National New Product" designation (1990)
- National S&T Progress Prize (1993)
- High-Tech Enterprise — Shandong Provincial S&T Commission
- Asbestos-free xonotlite formulation — independent IP
- Non-stick aluminum high-density board technology
6. Quality Control System
As an ISO 9001-2015 certified calcium silicate insulation manufacturer, Mingfa operates a four-stage quality assurance system that tracks every production batch from raw material to shipment. For international buyers evaluating calcium silicate board manufacturers and suppliers, this transparency is essential for supply chain confidence.
Stage 1: Incoming Inspection
All raw materials — quicklime, silica, reinforcing fibers — are tested against purchase specifications before acceptance. Non-conforming materials are rejected at the gate.
Stage 2: In-Process Control
CaO/SiO₂ ratio, slurry viscosity, and gel reaction temperature are monitored at each production stage. Filter press pressure and mold dimensions are verified per batch.
Stage 3: Batch Testing
Every production batch is sampled and tested for density, compressive strength, thermal conductivity (per ASTM C518), linear shrinkage at rated temperature, and dimensional accuracy.
Stage 4: Certificate & Release
Each shipment includes a Batch Certificate of Analysis documenting all test results. Sample retention policy ensures full traceability — retained samples are kept for 24 months.
Products comply with ASTM C533 (Type I 649°C / Type II 927°C), EN 13501-1 Class A1 (non-combustible), and relevant GB Chinese national standards. Third-party testing reports are available to customers upon request.
7. Global Reach & Logistics
Mingfa products have been exported to over 70 countries and regions, with a cumulative export volume exceeding 360,000 cubic meters. Our products serve cement, aluminum, steel, glass, petrochemical, and fire protection industries worldwide — from North America and Europe to the Middle East, Southeast Asia, Africa, and South America. This global footprint makes Mingfa one of the most internationally established calcium silicate insulation exporters from China.
2 Hours from Factory
Flexible Incoterms
Standard Lead Time
20GP / 40HQ Loading Plans
Located just two hours from Qingdao — one of China's top 10 container ports — Mingfa offers efficient logistics for FOB, CIF, CFR, and EXW shipments. Standard lead time is 15–30 days depending on order volume and product specifications. Our export team provides container loading optimization to minimize freight costs per unit.
8. Honors & Certifications
| Year | Award / Certification | Issuing Body |
|---|---|---|
| 1990 | National New Product | State Science & Technology Commission |
| 1991 | First Prize — Scientific & Technological Progress | Ministry of Building Materials |
| 1993 | Third Prize — National Scientific & Technological Progress | State Science & Technology Commission |
| — | "Double 500" Excellent Energy-Saving Product | State Economic Commission / Planning Commission / S&T Commission |
| — | Silver Award — Beijing International Expo | Beijing International Expo Committee |
| — | High-Tech Enterprise | Shandong Provincial Science & Technology Commission |
| — | Shandong Province Star Enterprise | Shandong Provincial Government |
| — | Shandong Province Famous Trademark | Shandong Provincial Government |
| — | Contract & Promise-Abiding Enterprise | Shandong Provincial Administration for Industry & Commerce |
| Ongoing | ISO 9001-2015 Quality Management System | Accredited Certification Body |
| Ongoing | EN 13501-1 Class A1 (Non-Combustible) / ASTM C533 Compliant | Third-Party Testing Laboratories |
9. Why Choose Mingfa as Your Calcium Silicate Insulation Supplier
Specialized Focus — Not a Generalist
Unlike larger competitors (e.g., Luyang — primarily a ceramic fiber producer), Mingfa is a dedicated calcium silicate insulation manufacturer. This singular focus drives deeper expertise, better formulations, and more consistent quality.
34 Years of Domain Experience
Founded in 1991, Mingfa is one of the earliest calcium silicate insulation manufacturers in China. Three decades of production data, formulation refinement, and application engineering knowledge are embedded in every product.
Independent Intellectual Property
14 national patents and 5 high-tech achievements. Mingfa owns its core technology — this is a true manufacturer, not a trading company reselling others' products. Customers deal directly with the source.
30–50% Cost Advantage vs European Brands
Shandong-based production with direct Qingdao port access means competitive pricing without sacrificing quality. For equivalent ASTM/EN-compliant products, Mingfa offers a significant cost advantage over Promat, Skamol, and other Western manufacturers.
Flexible OEM / Custom Manufacturing
CNC machining, custom densities (170–900 kg/m³), special shapes, private labeling, and tailored packaging. As a dedicated calcium silicate OEM manufacturer, Mingfa adapts to customer specifications — not the other way around.
Proven Global Delivery
360,000+ m³ shipped to 70+ countries. Customers include major industrial projects in cement, aluminum, steel, power, and fire protection. Every batch is traceable; every shipment includes certified test documentation.
10. Corporate Culture
"Honesty" is the way to be a person; "Faith" is the foundation of a career. For over three decades, Mingfa has implemented the concept of integrity, strengthened internal management and control, and continuously advanced the corporate integrity system. Our ~560 employees operate with a disciplined morning meeting management system, reflecting a culture of operational rigor.
Innovation
14 patents and continuous investment in new formulations, lower-density products, and application-specific solutions
Efficiency
Integrated production from raw material to finished product; 15–30 day standard lead time; container-optimized shipping
Rigor
Four-stage QC system, batch-level traceability, and retained samples — because industrial insulation is safety-critical
Service
Technical guidance, installation support, and after-sales service — we treat every customer as a long-term partner
Endeavour
From a small 1991 workshop to 70+ country exports — continuous investment in technology and production capability
Integrity
"Contract & Promise-Abiding Enterprise" — recognized by Shandong Provincial Administration for Industry & Commerce
11. Leadership & Team
Mingfa is led by Sun Xiangyun, Legal Representative and company founder, who has guided the enterprise from its 1991 founding through three decades of growth in the calcium silicate insulation industry. The company's technical direction is shaped by the in-house research institute in collaboration with the China Academy of Building Materials Science and the Sichuan Fire Science Research Institute.
With approximately 560 employees across two production bases, Mingfa combines experienced leadership with a skilled technical workforce. Our international sales team — led by Fang Juanjuan — provides English-language support for technical inquiries, quotation requests, and order management.
Sales Contact: Fang Juanjuan — +86 13583512860 | Email: lzmfgr@163.com