Bonds are debt securities issued by private companies to raise capital for various business purposes, such as expanding operations, investing in business expansion, purchasing equipment, or constructing facilities. Bonds can be divided into units, and each unit has the same value. In Thailand, bonds are generally issued with a set value of 1,000 baht per unit, and the majority of debentures set a minimum purchase value of 100,000 baht or more, especially when sold to institutional or large-scale investors.