usual business practices; customary transactions
Refers to established, routine ways of conducting business or trade, often based on long-standing custom rather than formal contracts.
In this industry, customary business practices still remain.
商慣行 is a broader term for commercial customs or trade practices, while 慣行取引き specifically refers to the transactions themselves conducted according to such customs.
Compound of 慣行 (customary practice) and 取引き (transaction, dealing).