"Exte" can refer to EXTE, a global ad-tech platform (combining tech, media, creativity for ads), or ExTe Fabriks AB, a leading Swedish manufacturer of timber bunks and load-securing equipment for forestry since 1898. There's also an EXTE (founded 1959) in Germany making doors, windows, and concrete. Without more context, it could also just be a typo for "extend" or "extension," meaning to add more time, space, or length.