Partow Technologies LLC is a startup company that is developing novel photonics technologies for communication and sensing applications. The company designs, manufactures, and provides thin film lithium niobate substrates and devices. The core technology of the company is ultra-high vacuum surface activated bonding capability. Using this technique, we can bond a variety of materials at room temperature. After the bonding thin films of lithium niobate are produced by crystal ion slicing method. The company currently provide bonding service and thin film substrates to various customers. In addition, the company has developed optical modulators based on thin film lithium niobate for THz applications and periodically poled thin film lithium niobate devices for communication and sensing applications.