Concealed yellowing after an online walnut purchase: checks and aftercare

This is an English reading overview of the Chinese article, rather than a complete translation. Follow the original below for the full explanation and supporting details.

The central idea

This buying and aftercare guide explains what to check when concealed yellowing becomes visible after delivery. Compare the actual pair with its photographs, six-side video and disclosed condition, retain the transaction records and contact the official channel. Different conditions require separate assessment; the article's specific service statements should not be expanded into an unconditional refund promise.