知乎，让每一次点击都充满意义 —— 欢迎来到知乎，发现问题背后的世界。The HTS assigns 6-digit codes for basic types. Countries that make use of the HTS are permitted to define commodities at a more specific level than 6 digits, but all definitions need to be in just that 6-digit framework.Be sure to don’t tape above