Phenol-Formaldehyde is a synthetic polymer made from the reaction of phenol and formaldehyde. It is commonly used in the production of resins and adhesives due to its strong bonding properties and resistance to heat and chemicals. This material is often found in products like plywood, particleboard, and various household items. The manufacturing process involves a series of chemical reactions that create a hard, durable substance. Phenol-Formaldehyde is valued in industries such as construction and automotive for its versatility and effectiveness. However, it is important to handle it with care, as both phenol and formaldehyde can be toxic in certain concentrations.