This is a subcategory of security locks and keys for ensuring physical security of manufacturing site machinery, tool storage, parts warehouses, control panels, and other facilities. It handles industrial lock systems designed for theft prevention in factories and warehouses, preventing unauthorized access to critical equipment, and restricting entry to hazardous areas. Target products include physical locking devices such as padlocks, cylinder locks, electronic locks, master key systems, key boxes, security chains, and wire locks. This product group considers environmental resistance to dust, oil, and moisture specific to manufacturing industries, durability for 24-hour operation sites, and unified management across multiple locations. It is distinguished from electronic access control systems and card readers, focusing specifically on mechanical and physical locking mechanisms.