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Low-density coated sand 
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Low-density coated sand is processed using our company's unique ball milling scrubbing technology, chemical coating technology, and multi-layer coating technology.
"Ball milling scrubbing technology" refers to the process where quartz sand aggregates with more than 95% silicon dioxide content are selected by our company and subjected to ball milling, water washing, and acid washing processes to achieve higher roundness, sphericity, and strength. The nearly spherical silicon dioxide aggregates provide a fundamental guarantee for excellent flow conductivity.
"Chemical coating technology" refers to the process where polymer membrane materials form an integrated single particle with quartz sand aggregates through high-temperature melting. This is different from traditional coating technologies, and the new type of proppants processed with chemical coating technology have further improved compressive strength.
"Multi-layer coating technology" refers to the selection of polymer materials and modified materials with different performance characteristics such as thermoplastic and thermosetting properties during the coating process. Coating is carried out in batches to form a multi-structure membrane. Compared with traditional single-structure membranes, multi-structure membrane proppants have better roundness, sphericity, strength, and acid and alkali resistance. They effectively ensure 100% particle coating and 100% surface coating of particles, while effectively repairing the sphericity of quartz sand aggregates, significantly improving long-term flow capacity.
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