Proofing in different jewelry factories, why is the proofing fee different?

Question: I am looking for proofing. The first one charges 300 yuan, the second one charges 400 yuan, and the third one charges 600 yuan. Why is the difference so far? Answer: Generally speaking, the proofing fee charged by the jewelry factory for proofing is not enough for the cost of proofing, and the proofing fee will be refunded when the product is large. Of course, different jewelry factories have different charging standards for proofing. The ones with low charges are not necessarily good. Generally, the more large-scale jewelry factories have slightly higher charges because they use better raw materials and better production processes. Mature, so the samples made will generally be better. More importantly, this kind of jewelry factory will be guaranteed to be large-scale, and it is a long-term and stable cooperation jewelry factory. The low-cost processing plants are basically workshop-type processing plants. Usually there are not many sources of goods and few customers. Moreover, the raw materials are used as cheap as possible. Therefore, they basically process some products of low grade and low quantity. . The information comes from the Internet, please contact if it involves infringement.