SDIC Securities released a research report saying that since 2023, there have been frequent incidents of reduction and shutdown of overseas zinc mines, supply-side disturbances have continued, and domestic zinc mines will increase or be limited during 2024. Imported and domestic smelting TC continued to decline, highlighting the tight supply at the mining end. Raw materials are tight combined with smelting and maintenance. Zinc ingot production is expected to decline month-on-month in April. The tight supply logic is transmitted to the zinc ingot end, and zinc prices are expected to strengthen. It is recommended to focus on the zinc sector. It is recommended to pay attention to: Chihong Zinc-Germanium (600497.SH), Jinhui Co., Ltd. (603132.SH), CICC Lingnan (000060.SZ), Societe Generale Silver Tin (000426.SZ), etc.