In scenarios such as industrial automation, logistics warehousing, and food processing, weighing sensors serve as core metrological components, and their quality directly impacts the stability of equipment operation and the accuracy of data. However, the market is filled with a wide range of products, with inferior sensors often attracting buyers with low prices but suffering from material defects and rough craftsmanship, leading to reduced accuracy, shortened lifespan, and even safety accidents. Next, we will systematically analyze the pitfalls to be wary of when purchasing, covering dimensions such as technical principles, material craftsmanship, and performance parameters, to assist you in establishing a scientific selection logic.