TREE NEWS update: A batch of Weiwei’s sugar-free black sesame paste produced by wholly owned subsidiary Weiwei Huashan Walnut Industry was ruled substandard after Shanghai market regulators found mold levels up to 2,800 CFU/g, 27 times the national limit. The 320g-per-bag batch was produced on Aug 13, 2025. On Sept 24, Weiwei’s flagship store customer service said the batch was recalled and disposed of immediately and is no longer on sale, with all products currently sold undergoing strict testing.
Weiwei black sesame paste found with mold 27 times over limit
Food-safety failures at a listed brand's own subsidiary carry reputational weight beyond a single batch, since regulators named the producer rather than an anonymous supplier. The disclosure that the batch was recalled and destroyed, and that remaining stock is being tested, addresses the immediate exposure but leaves the underlying production controls unverified. The open question is whether this proves isolated to one production run or points to a broader gap in subsidiary-level quality oversight.
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