The surge in demand caused by Klarna installment payments is reshaping the manufacturing system. After the surge in orders, the leading Klarna sex doll brand began to adopt the JIT (Just-in-Time) production model of the automotive industry, and the raw material turnover efficiency increased by 90%. Traditional torso sex doll factories are forced to maintain high inventory due to order volatility. It is worth noting that installment payments enable manufacturers to obtain accurate demand forecasts - Klarna's consumer data sharing agreement allows factories to dynamically adjust production capacity according to the geographical/income distribution of installment users. This data-driven supply chain reduces inventory costs to the lowest level in the industry.