noun
bargaining chip; bargaining tool
Refers to something used as leverage in negotiations or deals.
彼はその情報を取引材料として使った。
He used that information as a bargaining chip.
新技術が交渉の取引材料になった。
The new technology became a bargaining tool in the negotiations.
Compound of 取引 (とりひき, 'transaction, dealing') and 材料 (ざいりょう, 'material, ingredient').