Fiber optic jumpers, fiber pigtails and fiber couplers are all used in fiber optic engineering, such as fiber to the home project. China has high-quality manufacturers because there are many types, such as 6-strand and 12-strand fiber optic pigtails. There are also 24 strands, and the fiber jumper connector types are SC/FC/LC/ST/UPC/APC, etc., so be sure to communicate clearly with the factory to avoid mistaken star models.