We can produce all sizes of calcium carbide as your requirement.We produce all sizes of calcium carbide as your requirement such as 80-120mm, 50-80mm, 25-50mm, 7-30mm ,4-15mm, 1-4mm etc. gas yield 285 l/kg, 295 l/kg, 305 l/kg, All of our products are packed with 50kg/100kg/250kg new iron drums. Our annual production capacity has been up to 70,000 tons of calcium carbide each year.We are a professional Calcium Carbide manufacture and exporter in China Mainland. You are welcome to our website www.chinahlc.com and please fell free to contact us.Ms. BonnieTel竊�6-29-87448655Mobile:86-13259926768Calcium Carbide from Shaanxi HengLiCheng Chemical Co., Ltd.