美国采购需求：游标卡尺、左手游标卡尺、数显卡尺、带表内径表、带表卡尺、外径千分尺

I'm reaching out to inquire about the availability of your left-handed digital calipers, specifically the 6-inch model. I noticed that it has been out of stock for some time and I'd like to get an update on when I can expect them to be available for purchase again. This product has been popular among my customers, and having them in stock would greatly benefit our sales. Additionally, if you could provide any details regarding potential production timelines or pre-order options, that would be immensely helpful. I'm eager to restock this item as soon as possible, so any insights into your current inventory plans would be much appreciated. Thanks for your help!