Colorunion is in a leading position in China's best price toner cartridges research and development field. Colorunion has created a number of successful series, and toner cartridge for hp printer is one of them. The LED boards of Colorunion Ink cartridge are treated with a conformal coating which provides a moisture barrier between sensitive components on the board and the outside world. Equipped with advanced facilities, we focus more on the quality assurance.
our team has always adhered to the business tenet of 'Quality First, Credit First'. Welcome to visit our factory!