All of the accounts receivable are non-interest bearing. The Company maintains an estimated allowance for credit losses to reduce its accounts receivable to the amount that it believes will be collected. The Company evaluates its accounts receivable on a collective (pool) basis and determines the allowance for credit loss based on aging data, historical collection experience, customer specific facts, current economic conditions and reasonable and supportable forecasts of future economic conditions. For the three months ended March 31, 2026 and 2025, the Company reversed approximately US$0.18 million and provided approximately US$0.01 million in credit losses for its accounts receivable, respectively.