Thermal transfer printable label tape is polyimide based permanent pressure sensitive acrylic adhesive tape, designed for thermal transfer printing with black (or colored) resin base ribbons. It is also designed for barcode or alphanumeric identification of printed circuit boards or related electronic components. Electric heat tracing, heat tape or surface heating, is a system used to maintain or raise the temperature of pipes and vessels. The pipe is usually covered with thermal insulation to retain heat losses from the pipe. Heat generated by the element then maintains the temperature of the pipe. A label printer is a computer printer that prints on self-adhesive label material and/or card-stock (tags). A label printer with built-in keyboard and display for stand-alone use (not connected to a separate computer) is often called a label maker. Label printers are different from ordinary printers because they need to have special feed mechanisms to handle rolled stock, or tear sheet (fanfold) stock. Common connectivity for label printers include serial, Universal Serial Bus (USB), parallel, Ethernet and various kinds of wireless. Label printers have a wide variety of applications, including supply chain management, retail price marking, packaging labels, blood and laboratory specimen marking, and fixed assets management. Thermal adhesive is a type of thermally conductive glue used for electronic components and heat sinks. It can be available as a paste (similar to thermal paste) or as a double-sided tape. It is commonly used to bond integrated circuits to heat sinks where there are no other mounting mechanisms available.