Accuracy Guarantee
每個設計都對照已發表的資料進行核查。發現物理錯誤，我們會修正設計，並免費寄給你一件修正後的替換品。
What counts
A factual physics error in the design, or in its printed equation or label, as sold. That means a wrong sign, a wrong constant, a wrong formula or a mislabelled law.
How
Email info@pixelatedphysics.com with your order number, a photo, and a description of the error. A photo is required. We verify it, fix the design and send a free corrected replacement of the same item. No return is needed. One replacement per item.
The 21-day limit does not apply to physics-error claims.
Print defects are handled under our standard print-defect policy, not this guarantee.