2.8.3 Jinan Huafu Forged Steel Grinding Balls Sales, Price, Revenue, Gross Margin and Market Share (2016-2017) 2.9 Jinchi Steel Ball. 2.9.1 Business Overview 2.9.2 Forged Steel Grinding Balls Type and Applications 2.9.2.1 Type 1 2.9.2.2 Type 2 2.9.3 Jinchi Steel Ball. Forged Steel Grinding Balls Sales, Price, Revenue, Gross Margin and Market ...