Vegetable traders in China's Hebei Province soaked Chinese cabbage in formaldehyde to keep the produce appearing fresh [1].

The discovery highlights ongoing food safety vulnerabilities in regional supply chains where illegal chemicals are used to deceive consumers about the age of produce.

Local authorities in Kangbao County launched an investigation after receiving reports via the internet [1]. The probe confirmed that traders had been immersing the vegetables in the chemical solution [1].

Formaldehyde is a known carcinogen, and its use in food production is strictly prohibited [2]. The chemical was used specifically to maintain the visual freshness of the cabbage [1].

"It is an illegal act intended to maintain the freshness of the vegetables," a spokesperson for the Kangbao County government said [1].

The investigation was triggered by public accusations posted online on Aug. 22 [1]. Following these reports, a government investigation team verified the practice at the trader level [1].

"It is a carcinogenic substance, and its use is strictly prohibited," the People's Daily editorial board said [2].

"It is an illegal act intended to maintain the freshness of the vegetables,"

This incident underscores the persistent challenge of food safety enforcement in China's agricultural sector. The reliance on social media for 'whistleblowing' suggests that formal regulatory inspections may not always detect localized fraud, leaving the public dependent on digital crowdsourcing to expose health risks in the food supply chain.