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Premium Calcium Carbide for Sale Direct From Factory. High Gas Yield: Typically 295L/KG to 310L/KG depending on particle size and purity. Strict Quality Control: Multi-stage sampling, air pressure testing, and compliance with GB10665-2004. International Certification: Products meet international standards with SGS, BV, and ISO certificates. Fast Delivery: Usually within 20 days after receiving deposit or original L/C. Large Production Capacity: Monthly production capacity of 6000 tons from own factory. Customization Available: ODM and OEM services available for customized requirements.