齐全 emphasizes that nothing is missing from a collection or set. It's commonly used for: 商品齐全 (goods are well-stocked), 设施齐全 (facilities are comprehensive), 手续齐全 (paperwork is complete).
usage
Compare with 完整 (wánzhěng, intact/complete - emphasizes nothing is broken or missing from a single thing) and 全面 (quánmiàn, comprehensive - broader in scope, often used for knowledge or coverage).
