Euro-American Lecai sand caulking agent is formulated in strict accordance with international standards, using two-component epoxy resin and liquid negative oxygen ions as double-tube caulking agent for tiles and glass mosaics. It has good cleanliness, strength, wear resistance and chemical resistance. Therefore, it is very suitable for use in, for example, food industry, catering kitchen or spa, in which case, higher durability and cleanliness are required.