Where does China produce the most compressed food?

Qinhuangdao produces the most compressed food. Qinhuangdao Fushou Food Co., Ltd. and Qinhuangdao Ocean Food General Factory produce compressed food. The general logistics pilot base of Shanghai Guanshengyuan Food Co., Ltd. once produced a batch in the trial production stage, but later it no longer produces products mainly from the above three companies, and the product features military green cans.