As the pencil sharpeners have their own special requirements, the precision demand in its each step from mold manufacture to injection molding production control as well as blade assembly is a difficult and troublesome problem. It is imaginable for amateur or green hand ( if the die results in different shrinking due to design and manufacture of the dimension of each compartment, without any combination with the condition of the injection molding process, it is not of any perfect design, and cannot also give out any stable products). In our company the mold has 28 cavities and after injection molding the accuracy of products from each cavity is controlled within 50um (0.05mm)which is the nuclear advantage of our Sanjin. In the past years , we have helped many clients to resolve the "pencil sharpener" problem of mold.
    Splendid History: Quality is recognized and trusted by the foreign trade personnel and they are at very ease to our products. When the inspection personnel in the stationery section of Fujian Quanzhou Mineral Import and Export Foreign Trade Company checked export bill they said to the manufacturers of stationery, if you use Sanjin pencil sharpeners we may not check goods at site, and directly store in warehouse and deliver goods.
                          “Specialization Makes it Outstanding; Sanjin may Resolve Your Perplexity"

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