Main Products
Our company specializes in high-end, high-temperature crystalline fiber refractory and insulation materials.
10+ Years Oem & Odm
Zhejiang Nengcheng Crystal Fiber Co., Ltd
Zhejiang Nengcheng Crystal Fiber Co., Ltd. is located in Leidian Town, Deqing County, Huzhou City. Situated within the Yangtze River Delta’s industrial cluster for advanced refractory materials, the company specializes in the R&D, production, and deep processing of high-end, high-temperature resistant crystalline fiber materials—including polycrystalline mullite fibers, alumina crystalline fibers, and zirconia-containing ceramic fibers.
View MoreOur ServicesFlexible solutions For All industries
Solution Provider
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Vacuum Heat Treatment
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Industrial Heat Treatment
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Powder Metallurgy
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Metallurgy & Non-Ferrous Metals
Precision Furnace Insulation
Used in vacuum annealing, quenching, tempering, brazing, and sintering furnaces. Our fiber materials improve temperature uniformity, reduce heat loss, and enhance energy efficiency.
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Efficient Thermal Insulation
Ideal for box, pit, car-bottom, pusher, mesh-belt, and continuous furnaces. Lightweight insulation enables faster heating, lower heat storage, and shorter production cycles.
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Clean High-Temperature Protection
Suitable for MIM, powder metallurgy, and cemented carbide sintering furnaces. High-purity fibers provide stable insulation while minimizing contamination and particle shedding.
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Thermal Shock Resistance
Applied to aluminum, copper, stainless steel, and metal forging furnaces. Excellent thermal shock resistance supports reliable performance during frequent temperature changes.
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Case Studies
Vacuum Annealing Furnace
1600°C Mullite Fiber Insulation
Polycrystalline mullite fiber provides low thermal conductivity, low shrinkage, and excellent thermal shock resistance for stable vacuum annealing operations.
High-Temperature Laboratory Furnace
1700°C Alumina Fiber Protection
High-purity alumina fiber delivers excellent chemical stability and ultra-high-temperature resistance for demanding laboratory heating applications.
Precision Heat Treatment Furnace
Reliable Mullite Fiber Lining
Mullite fiber boards and modules provide efficient thermal insulation, helping maintain stable furnace temperatures and reduce heat loss.
Industrial Heat Treatment Equipment
Cost-Effective Zirconium Fiber Insulationr
Zirconium-containing ceramic fiber offers long-term performance up to 1400°C, combining reliable insulation with excellent cost efficiency.
Custom Furnace Components
Precision Vacuum-Formed Solutions
Custom insulation components are manufactured to client drawings, ensuring accurate fitting, easy installation, and efficient furnace insulation.
Become Our Partner
After years of dedicated development, the company has established comprehensive production lines, integrating the in-house production of raw materials with the customized processing of finished products.