https://www.overseadia.com/en-US/detail/0b550c1188b8219001f7e4b22e927a1f Fuyaochang's Slag Retaining Ball Model 1 is a highly efficient product that ensures effective slag retention in metallurgical industries. The product is designed to prevent slag from flowing out of the furnace and causing damage to the refractory lining. With its superior quality and durability, the Slag Retaining Ball is a reliable solution for all your slag retention needs.