四方科技：公司罐式集装箱产品包括标准罐式集装箱和特种罐式集装箱

Group 1 - The core viewpoint of the article is that Sifang Technology (603339) has clarified its product offerings in response to investor inquiries, specifically highlighting its standard and special tank containers used in various logistics sectors [1] Group 2 - The company's tank container products are utilized in the chemical, energy, and food and beverage logistics fields, indicating a diverse application range [1]