What legal provisions of the contract should Shanghai specifically review? The subject matter clause is one of the core terms of the contract. Any contract has two core clauses, one is the main clause, and the other is the subject clause. Without one of them, the contract cannot be established. Generally speaking, the subject matter clauses should at least contain the following key contents: the name of the subject matter, the owner and the certificate of rights (such as real estate certificate), etc. When agreeing on the terms of the subject matter of the contract, you should pay attention to the following matters: Use the formal name of the subject matter, that is, the standard scientific name, and use the full name. The written description must be clear and specific, and product names that comply with international standards or international industry practices should be used as much as possible. For example, the standard scientific name of Apple mobile phone 5s is iphone5s. The increasingly abundant commodities in modern society make it difficult to explore the true meaning when the agreement between the two parties is unclear. Therefore, the delivery of similar commodities as the subject of the contract will result in the failure of the purpose of the contract, which is a serious legal risk. A certain trademark marks the performance, quality and type of certain goods. Only by stating a trademark can the product be specified. For example, "Tiantian Brand" automatic umbrellas, "Universe Brand" filter cigarettes, etc. The price difference for the same product is sometimes huge due to different brands. Can the Apple iPad and the Lenovo iPad be the same? When determining the subject matter, we must also pay attention to the situation of objects with the same name and different names. For example, soybeans generally refer to soybeans, but in some places broad beans are also called soybeans; and bicycles are called rickshaws in some places, bicycles in others, and bicycles in others. This situation requires both parties to clearly agree on the subject matter, sometimes even with necessary pictures or descriptive instructions. The variety, specification, color and accessories of the subject matter should be stated. For example, when purchasing a TV, in addition to the name and trademark, you must also specify the model, whether it is black and white or color TV or digital TV; whether it is vertical or horizontal; whether it is remote-controlled or self-adjusting, as well as its size, etc. Especially for multi-specification products, you need to pay special attention. When we negotiate with customers, we must explain the specific specifications of each model of product, and at the same time understand the customer's needs in detail to avoid errors between supply and demand. Only when the above issues are clarified can they be considered certain and the subject matter can be specified. ?