On turn-key jobs, what does RushPcb Inc do about part crossing or substitutions?

RushPcb Inc does not substitute parts or cross the part numbers without customer’s approval. Because we do not carry any inventory, we don’t have any parts for substitution or crossing. If parts aren’t available for purchase on your assembly, we first discuss the situation with you. Then, before we order, you decide what changes are made to the bill of materials.