Factors to be considered material, size and intended use of the product when casters classified. Since the invention of the wheel, handling and moving objects a lot easier. In modern times with the rise of the industrial revolution, more and more devices need to be moved, almost inseparable from all walks of life. "Casters." Castors structure is relatively simple, usually by a single wheel mounted on the bracket is made, some caster brake is an additional aid to help docked. In the industry classification of casters, from whether the steering can be divided into fixed casters and Caster (caster); its material composition can be divided into steel casters, plastic casters and rubber casters.
Although aware of some of the import and export enterprises commodities "casters" with specific column names in the "tax", the tax number is 8302.2000, but refer to the "Notes heading" Chapter 83 and in Note 2 under heading 83.02 on the "caster" in description can be found in the tariff lines included in "caster", from the material and specifications are clearly defined terms (Figure 2). However, with the specific needs of various sectors of the casters and caster own technological innovations, some of the caster is now in the declared customs clearance, they have far exceeded the "tax" in the tax from the specifications, materials, or use other attributes feature No. 8302.2000 "caster" description of the category, and these casters in the "tax" No other items in the column name.