流程為什麼會卡住
廠商尚未確定，料號就不能申請；設計圖先進報價流程，採購若只看價格，可能選到便宜但做不出來的供應商。設計一變，報價又要重跑。
共同決策需要更多訊號
除了單價，也要把製造能力、技術風險、交期、變更成本與客戶時程放在同一張決策表上。
三角平衡
好的流程不是讓某一方更快，而是讓工程與採購更早共享條件，在設計、價格與時效之間做有意識的取捨。
Why the Process Gets Stuck
Without a selected supplier, part numbers may be blocked. If procurement sees only price, the cheapest supplier may not be able to build the design. A design change restarts quotation.
Shared Decisions Need Better Signals
Unit price must be considered together with manufacturing capability, technical risk, lead time, change cost, and customer schedule.
Balancing the Triangle
A good process helps engineering and procurement share constraints earlier and make explicit trade-offs among design, cost, and timing.