为什么最便宜的商业线性LED报价，通常在18个月后变成最贵的一个
追踪6年采购发票后，我发现建筑线性LED灯具的隐藏成本几乎从不写在报价单上。这是我把TCO模板改过的原因，以及哪些情况下你可以放心选最便宜的。
Architectural Linear Lights Sourcing procurement articles
Notes on run geometry, joints and quotation scope for led linear lighting inquiries. These articles are checklists, not factory performance guarantees.
Architectural Linear Lighting Sourcing: Why I Never Trust the Series Sheets
A procurement manager with 8 years in commercial linear LED projects shares the LM-79 report mistake that cost $6,800, the pre-order checklist he built from 3 significant failures, and where this advice doesn't apply.