海安集团：全钢巨胎产品研发成功后，下游客户初期会采购小批量的产品进行试用

Group 1 - The company, Hai'an Group, indicated that the certification time varies depending on the type of mineral [1] - After the successful development of all-steel giant tires, initial purchases by downstream customers will involve small batches for trial [1] - The quality of all-steel giant tires can only be verified after they are used and scrapped, with metal minerals typically requiring 12-18 months to obtain performance data, while non-metal minerals require 18-24 months [1]