Speed cube manufacturer: Shengshou
Shengshou is among the first manufacturers focusing on the production of larger speed cubes such as the 7x7 or 8x8. They initially became known largely for a 4x4 speed cube so superior in quality that it beat out all existing 4x4 cubes. Various world records for larger cubes were set with Shengshou products. The brand has built a reputation for sturdy and very reliable speed cubes in sizes 4x4 and up.