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High-Purity Functional Fillers
Shandong Useen Calcium Co., Ltd. specializes in a range of products, including nano-scale calcium carbonate, food-grade calcium carbonate, calcium oxide, calcium hydroxide, and light calcium carbonate. Our company owns 17 fully automated calcium oxide production lines, three calcium hydroxide production lines, and nine calcium carbonate production lines. Its annual output is 200,000 tons for nano-calcium carbonate, 200,000 tons for calcium hydroxide, 160,000 tons for light calcium carbonate, 360,000 tons for heavy calcium carbonate, and 1 million tons for calcium oxide.
Central European Macroeconomic Integration
The Slovak Republic (Slovakia) sits at the geopolitical and logistics core of the European Union, demonstrating one of the highest industrial outputs per capita on the continent. Renowned worldwide as a preeminent automotive production hub, Slovakia houses state-of-the-art facilities for tier-one automotive giants and an interconnected web of sub-suppliers spanning Trnava, Bratislava, Nitra, and Žilina. Calcium carbonate (CaCO₃)—available as fine Ground Calcium Carbonate (GCC), highly controlled Precipitated Calcium Carbonate (PCC), and surface-modified Ultrafine Nano Calcium Carbonate—serves as an indispensable functional additive across this manufacturing nexus.
In addition to automotive assembly, Slovakia's vibrant construction, chemicals, packaging, paper, and polymer industries are experiencing an accelerated transition toward material lightweighting, carbon optimization, and cost-effective matrix reinforcement. As strict EU decarbonization and chemical directives (such as REACH and CBAM) enforce tight quality controls, Slovak enterprises are seeking strategic supply partnerships with high-capacity, automated factories that guarantee chemical purity, consistent particle morphology, and uncompromising trace-element profiles.
Engineering Solutions
Supplying Tier-1 OEMs in Slovakia with ultra-fine, stearic-acid-modified Nano Calcium Carbonate. Acts as a key thixotropic and rheological modifier in MS Polymer, Polyurethane (PU), and PVC plastisol underbody chassis coatings, preventing sagging during high-temperature bake cycles.
Leading the technological leap in Polyethylene (PE) blow-molded films and PVC profile extrusions. Our activated nano-calcium carbonate replaces virgin polymer resins, elevating tensile toughness, flexural modulus, dart drop resistance, and thermal dispersion without screw abrasion.
Supporting Slovakia's dense rubber and tyre compounding operations with high-whiteness GCC and Nano-PCC. Delivers semi-reinforcing capabilities, reduces vulcanization compound shrinkage, increases thermal conductivity, and stabilizes compound processing properties.
Supplying alkaline papermaking operations in Ružomberok and surrounding Slovak papermaking facilities with specialized scalenohedral precipitated calcium carbonate (S-PCC), delivering superior opacity, whiteness, smoothness, and ink retention.
Providing carefully classified GCC spanning 1250 mesh to 3000 mesh for Slovak architectural coatings, self-leveling floor compounds, and plaster mortars. Replaces costly titanium dioxide (TiO₂) while preserving weatherability, scrub resistance, and gloss levels.
Food-grade and feed-grade calcium carbonates strictly conforming to European EFSA standards. Serving Slovak poultry and livestock agribusinesses as an essential bioavailable calcium source promoting bone density and eggshell integrity.
| Parameter / Mineral Attribute | Shandong Useen Technical Standard | European & Slovak Norm Compliance |
|---|---|---|
| CaCO₃ Purity Assay | ≥ 98.5% - 99.2% | EN 1097 / ISO 3262 Grade A |
| Mean Particle Diameter (d50) | Nano-Scale (40-80 nm) to Micron (1.5-12 μm) | Laser Diffraction (Malvern Mastersizer 3000) |
| Whiteness (Ry / ISO 2470) | 95.5% - 97.5% | High Opacity & Brightness Standard |
| Moisture Content | ≤ 0.20% | DIN EN ISO 787-2 Standard |
| Surface Functionalization | Stearic Acid / Titanate / Silane Coupling | Optimized for Hydrophobic Polymers & Resins |
Welcome to Useen
Our materials are used across a wide range of industries including PVC pipes, automotive primers, paper, printing inks, wires and cables, sealants, rubber products, tyres, and more. Our clients rely on us for consistency, tailored solutions, and support in scaling their operations without compromising on quality. Our company is the first in China to apply nano calcium carbonate to PE blow molding products, which can replace traditional filling materials and has excellent performance.
Strategic Industry Outlook
As the automotive sector around Trnava and Nitra transitions toward Electric Vehicles (EVs), battery packs, automotive wiring, and acoustic floor underlays demand non-halogenated flame-retardant fillers and high-insulation mineral carriers. Useen's surface-treated nano-carbonate provides exceptional dielectric insulation, thermal dissipation, and composite tensile balance.
The Slovak packaging industry faces mandatory recycled-content thresholds under European circular economy regulations. Post-consumer resins (PCR) often present degraded melt strength and lower rigidity. Incorporating our ultra-fine calcium carbonate recovers lost flexural modulus, enhances melt homogenization during compounding, and stabilizes cycle times in high-speed Slovak blow-molding and extrusion facilities.
Efficient supply routes connect our deep-water loading terminals and rail hubs directly with European container terminals and Slovak inland logistics depots (including dry ports in Bratislava, Dunajská Streda, and Košice). Customized moisture-proof palletization, container liners, and 1-ton bulk bags ensure zero humidity absorption throughout continental transit.
With 29 automated production lines powered by digital continuous monitoring, Shandong Useen executes millisecond feedback loops on calcination thermal profiles, particle classification, and surface activation. Slovak compounders receive unmatched batch-to-batch repeatability with narrow particle size distributions.
Comprehensive Product Portfolio
Precipitated Calcium Carbonate (Paper)
Ground Calcium Carbonate (Rubber)
Nano Calcium Carbonate (Rubber)
Precipitated Calcium Carbonate (Rubber)
Precipitated Calcium Carbonate (Industrial Additives)
Ground Calcium Carbonate (Feed)
Nano Calcium Carbonate (MS sealants)
Ground Calcium Carbonate (Coating, Painting)