华钰矿业：截至目前，公司国内产品主要为锌精矿以及铅锑精矿（含银）

Group 1 - The company, Huayu Mining, confirmed that its business operations comply with national industry policy requirements [1] - The company's main domestic products are zinc concentrate and lead-antimony concentrate (including silver) [1] - The primary customers of the company are large downstream smelting enterprises and traders [1]