Import Cenospheres — Buy in Bulk from Supplier in China

Cenospheres from Yixing Oakridge Import/Export are hollow, spherical particles formed during coal combustion in thermal power plants, with a density range of 0.4 to 0.6 g/cm³ and a typical particle size distribution between 10 and 300 micrometers. These materials are not synthetic but are recovered from fly ash, then dried and sieved to remove impurities and oversized fragments, ensuring consistent physical properties. The product is not classified as a filler but as a functional lightweight additive with high compressive strength relative to its mass.

The material composition is primarily silica and alumina, with typical SiO₂ content between 50% and 65% and Al₂O₃ between 20% and 30%, consistent with standard fly ash-derived cenospheres. The wall thickness is generally 0.5 to 2 micrometers, contributing to low thermal conductivity and high resistance to chemical attack. These properties align with industry-standard cenospheres used in high-performance composites, though no specific ASTM or ISO grade is confirmed by the supplier.

Cenospheres are commonly purchased by manufacturers of lightweight concrete, syntactic foams, and polymer composites in the automotive, aerospace, and construction sectors. Buyers use them to reduce density without sacrificing structural integrity, particularly in insulation panels and cementitious mixes. The product is packaged in 500kg polythene bags, suitable for bulk handling. Trade terms are typically FOB or CIF from Chinese ports, with MOQs negotiable but commonly starting at one ton per shipment.

Yixing Oakridge Import/Export is a trading entity based in Yixing, Jiangsu Province, China, with a registered address at 402 228 Lv Yuan Road, Pacific Mansion. The supplier is listed as an imported tier with harbor trust verification, indicating active export activity and documented customs clearance history. No factory ownership, production capacity, or years in business are disclosed.

The listing confirms no in-house manufacturing, and the supplier functions as an exporter sourcing cenospheres from regional coal ash processors. There is no public information on employee count, revenue, or client names. Response metrics show zero response rate and zero average hours, suggesting limited buyer communication infrastructure. The supplier's value lies in logistics coordination and export documentation, not product development or certification.