Universal wheel, adjust the feet manufacturers with the continuous development of society, the application of castor market is also growing, so customers more strict with the quality of the product. Facing the high demands of the market, castor manufacturers to promote the competitiveness of the castor, except in product quality fluctuation kongfu, the application of outer packing will also bring castor sales help. Whether the outer packing what positive influence on the casters? 1, the protection function is also the most basic function of packaging, is to make the caster is not affected by a variety of external force. Castor to enter the market need after loading and unloading, transport, storage, display, and sales, in the process of storage and transportation, a lot of external causes such as the impact, dirty, factors such as light, will influence the quality of the caster. Therefore, the application of outer packing will protect. 2, convenient function that is packaged with casters to achieve the purpose of easy to use, carry, store. Castor, therefore, enterprises should attach importance to packaging design, standing in the consumer's point of view. 3, sales function in an increasingly competitive market today, the packaging of importance for the manufacturer understands, how to make their products to sell, how to make their products stand out from a wide variety of products, packaging design also can have certain effect, reasonable and concise and easy packaging design will be able to enhance customers liking to the product.