पुराणप्रतिसंस्कारं कर्म गुह्यमुपस्करान् ॥ कZ_०२.११.११८ ॥
purāṇapratisaṃskāraṃ karma guhyam upaskarān
(他应当识别)旧物翻新、隐蔽的加工痕迹,以及(用于欺诈性改造的)暗藏工具/器具的使用。
Refurbishment can be legitimate, but undisclosed reworking distorts price, taxes, and state procurement decisions; disclosure protects revenue and trust.