In addition, silicone rubber has outstanding characteristics of physiological inertness and does not cause coagulation, making it widely used in the medical field. Silicone rubber is divided into heat vulcanization type (high-temperature vulcanized silicone HTV) and room temperature vulcanization type (RTV), among which room temperature vulcanization type is further divided into condensation reaction type and addition reaction type. High temperature silicone rubber is mainly used to manufacture various silicone rubber products, while room temperature silicone rubber is mainly used as an adhesive, sealing material, or mold. The heat vulcanization type has the highest usage, which is further divided into methyl silicone rubber (MQ), methyl vinyl silicone rubber (VMQ, with the highest usage and product grade), methyl vinyl phenyl silicone rubber PVMQ (resistant to low temperature and radiation), as well as other types such as silicone rubber and fluorosilicone rubber.