This represents a unique identifier. It suggests a product. To decipher its meaning, we must additional information. Perhaps it refers to a unique file. Looking into the where it came from of this symbol would be beneficial. Truc Tiep Da Ga Thomo 2023 Thoi gian den tai/vào/cho đến ngay thang/ngày tháng/ngày/ 15/mười lăm/năm m�