Shaanxi Weikang Biotechnology Co., Ltd.

Shaanxi Weikang Biotechnology Co., Ltd. (陕西为康生物科技股份有限公司) processes Sichuan pepper, the Zanthoxylum spice known in Chinese as huajiao. Its plant is in the national Sichuan pepper industrial park at Zhiyang Town in Hancheng, Shaanxi Province, one of the country's main growing districts for the crop. A second registered entity, Shaanxi Weikang Food Technology Company Limited, operates from the same address. The company is designated a national-level key leading enterprise in forestry.

Raw pepper is held in low-temperature, humidity-controlled, nitrogen-flushed and light-excluded storage to limit loss of the volatile compounds that carry the numbing flavour. Processing uses supercritical carbon dioxide extraction, cryogenic milling under liquid nitrogen, and an in-house cell-wall-breaking micronisation method. The stated purpose of these routes is to cut flavour loss during processing and raise the yield of usable material, so that customers get a standardised product without trading off flavour against cost.

Output includes Zanthoxylum extract and Sichuan pepper seed oil, sold to food manufacturers as flavour ingredients.