The Carl Zeiss CARFIT CMX series is based on modular design and internal standard components, and is an economical and practical standardized system for manufacturing matching sample racks (internal, external, and connected). All Zeiss CARFIT standard components adopt modular design, are compatible with each other, and can be supplied quickly. The kit has diverse functions, can be reused, and has scalability. The package configuration is flexible and comes with auxiliary materials such as installation guides and electronic product catalogs.