Unable to determine. Information from China Cement Network shows: Recently, as the building materials market gradually picks up, the cement industry, as the foundation of the building materials market, has staged a "battle between real and fake Li Kui" in the market. Xinxiang City, Henan Province, as a traditional cement industry concentration area, has also become a counterfeit It is a place where counterfeit and inferior products often occur. Among them, "Tianrui" cement, as a well-known national trademark, has become the main target of counterfeiting. Counterfeiting techniques are endless, and it is even impossible to distinguish the genuine from the fake.