High-Quality Calcium Carbide 50-80mm Directly From China Factory

High-Quality Calcium Carbide 50-80mm Directly From China Factory. High Gas Yield: Gas yield ranges from 295L/Kg to 310L/Kg for optimal performance. Strict Quality Control: Multi-stage sampling and air pressure testing ensure safety and purity. International Certification: Products certified by SGS, BV, and ISO with monthly capacity of 6000 tons. Fast Delivery: Delivery within 20 days after receiving deposit or original L/C. Customizable Options: Customized gas yield, color, and certificates available for clients. Professional Manufacturer: Own factory in Ningxia with independent import and export rights.