
What is agreed on paper does not carry itself out. Regular follow up is what prevents last minute surprises.
Agree a fixed weekly update. Answering photos and questions quickly stops the factory from being late because it is waiting for you.
Plan around the Lunar New Year holiday, when many factories close for weeks and production slips before and after. Ask the supplier about their calendar early.
Set a follow up schedule for your order with five milestones and dates counted from the purchase order, in the sample and production tracker.