When placing an order or requesting a quotation for printed circuit boards(PCB), it is extremely important to clearly state all of your requirements as completely as possible.
While this may seem obvious, it is surprisingly common for PCB fabricators to submit a pricing estimate to the customer based on information supplied within the request for quotation, only to receive additional information after pricing and delivery have already been agreed upon and a purchase order issued. If the new information affects the price and/or lead time, the fabricator must notify the customer of the changes in terms.