Gelonghui, April 15 | Zhejiang Zhongcheng (002522.SZ) said on the investor interactive platform that the company's main business product, POF heat shrink film, can be used for the outer packaging of prepared food products, but the downstream application of the company's POF heat shrink film is very extensive, and the outer packaging of prepared vegetable products is only one application direction. Furthermore, the barrier shrink film and barrier shrink bag currently being developed by the company can be used for the outer packaging of food such as chilled meat to extend the shelf life of food.