Jiugui Liquor tested 260% above plasticizer limit — stock halved, 3 weeks, sector followed

On November 19, 2012, 21st Century Business Herald (21世纪网) submitted a sample of 50-proof Jiugui liquor for testing. Results showed dibutyl phthalate (DBP) at 1.08 mg/kg. Per the Ministry of Health Document No. 551 (2011) setting a maximum DBP residue of 0.3 mg/kg in food, the sample exceeded the limit by 260%. The General Administration of Quality Supervision later reported provincial testing confirming a 247% excess.

The plasticizer was not an intentional additive — it was residual migration from plastic containers, pipes and sealing materials used in production, storage and transport. The problem was that Jiugui's quality system did not test for this compound — and neither did the entire baijiu industry. After the news broke, Jiugui's shares hit their daily limit-down repeatedly, falling from around ¥40 to about ¥20 in three weeks, a loss of over 50%, with the PE ratio compressed to 13x.

Panic spread rapidly. Moutai, Wuliangye, Yanghe and other baijiu stocks all fell; the sector's total market cap evaporated by hundreds of billions. Jiugui was the trigger, but the real lesson was industry-wide: when an indicator has no testing standard, and the media sends a sample for testing, no company in the sector can prove its innocence.