Three thermal paper is a kind of thermal printing material with special function. It uses advanced technology and materials, does not require carbon strips, and can maintain stable performance in ambient light. This paper not only has the advantages of clear printing effect and fast printing speed of ordinary thermal paper, which makes it widely used in the catering industry, food packaging and industrial fields that need to mark and track product information. Choosing to use three heat-proof paper will be more appropriate. "Three defenses" means that the product has been carefully designed and improved in all aspects, showing excellent performance in special environments. "Three defense" series products have become one of the essential and important materials in many industries, and with the progress of science and technology and the increase in market demand, I believe that there will be more innovative "three defense" products in the future.