Ethyltrimethoxysilane is widely used as a coupling agent in the production of composite materials, enhancing the adhesion between organic polymers and inorganic substrates. It is commonly applied in the manufacturing of coatings, adhesives, and sealants to improve durability and resistance to environmental factors. In the construction industry, it is utilized to modify concrete and mortar, increasing their water repellency and strength. Additionally, it serves as a surface treatment agent for glass, ceramics, and metals, providing better bonding and protective properties. In the field of electronics, it is employed in the fabrication of semiconductors and insulating materials to ensure stability and performance. Its versatility makes it a valuable component in various industrial applications.