Lock units buy small and often
The lock industry runs on many small units buying brass, sheet, fasteners and consumables continuously against production. Frequent small purchases build a running account that nobody totals until settlement, which is exactly where a ledger that maintains itself from the billing earns its place.
Tanneries and their own requirements
The leather industry buys chemicals, packaging and structural material to its own schedule and under environmental regulation, which means batch and grade recording matters more than in an ordinary hardware account.
District building alongside
Beyond the industry, the surrounding area builds on agricultural income which concentrates demand. Movement over the same weeks last year is the basis for that half of the stocking decision, and low-stock alerts cover the season itself.