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High-Density Industrial Grade 25-120mm Calcium Carbide for Welding Industrial. Multiple Size Options: Available in sizes from 2-4mm to 80-120mm with gas yield up to 300 L/kg. OEM/ODM Services: Custom logo and design available on product packaging. Competitive Pricing: Best price offered with flexible bargaining options for buyers. Factory Direct Supply: Professional manufacturer located in Inner Mongolia, China. Fast Lead Time: Delivery within 15 workdays for both peak and off-peak seasons. Sample Availability: Samples can be obtained upon request for quality verification. Versatile Application: Core raw material for acetylene production in industry and agriculture.