This details about unique symbol. It may signify a product. To fully comprehend its meaning, we require further context. Perhaps it is associated with specific system. Looking into the source of this symbol would be helpful. Thomo Truc Tiep Da Ga 2023 Thoi gian den tai/vào/cho đến ngay thang/ngày tháng/ngày/ 15/mười lăm/năm m�