Tengzhou Ruiyuan Flavor Co., Ltd.

Ruiyuan Flavor makes heterocyclic synthetic flavour compounds and is at 2066 Yikang Avenue in Tengzhou, Shandong. Its catalogue is organised by ring system and covers pyrazines, thiazoles, furans, pyrroles, pyridines, thiophenes and sulfides, running to more than 200 items. The acetyl pyrazine, acetyl pyridine, acetyl thiazole and sulfurol listed here belong to those series.

The works cover 40,000 square metres and the company reports more than ten years of production history. Stated annual output is 150 tonnes of furanone and 100 tonnes of 2-acetylpyridine, with other compounds made alongside them. Several synthesis routes are kept in operation, which the company relates to meeting international food grade requirements. It sells to both Chinese and overseas flavour houses. No certification schemes, headcount or founding year are published on the site.