The factory ordered lead-free solder to meet the new environmental regulations in Europe.

工廠訂購了無鉛焊料，以符合歐洲新的環保法規。

Our technician noticed cracked solder on the circuit board and returned the unit for repair.

我們的技術人員發現電路板上的焊錫有裂痕，於是將該機器送回維修。

Please confirm the shipment of solder arrives before Monday so production can continue on schedule.

請確認焊料的貨件會在週一前送達，讓生產能照進度進行。