Packaging and ingredients. The recruitment information of Jining Kangquan Food Factory shows that the food factory recruits female workers, who are mainly responsible for: packaging and ingredients. Jining, a prefecture-level city under the jurisdiction of Shandong Province, is a type II big city. It is one of the central cities in Huaihai Economic Zone, a famous historical and cultural city and a waterfront eco-tourism city approved by Shandong Provincial Government.