
The second order may differ from the first if you do not follow up. Make sure quality stays steady.
Keep the habit of pre shipment inspection: yourself or with an inspection company, with an illustrated report. Finding a mistake before the goods leave is far cheaper.
Record customer complaints and returns by batch. If one cause repeats, put it to the supplier before the next order.
Write an eight point inspection checklist for your product and agree an AQL with the supplier. Decide who inspects.