HJHS(SH:603616) news flash·2025-07-23 11:02Core Viewpoint - The company, Han Jian He Shan, has experienced a significant stock price fluctuation, with a cumulative increase of 20% over three consecutive trading days, indicating abnormal trading activity [1] Company Summary - Han Jian He Shan's main business involves the production and manufacturing of prestressed concrete pipes (PCCP) [1] - The sales contracts for PCCP are primarily obtained through a bidding process, which is subject to competitive market conditions [1] - The company has stated that its production and operations are normal, and there have been no significant changes in the internal or external business environment [1] Industry Summary - The industry in which Han Jian He Shan operates is characterized by intense competition, leading to risks associated with the possibility of not winning bids [1]