After a long period of cable decline and the continuous improvement of various toy shapes, Lego mold has become a unique design mode. A set of molds for basic goods (such as remote-controlled cars) is about-1 10,000 yuan, a set of molds for Lego blocks (such as inferior fakes) is more than 30,000 yuan, and high-end products need more than 40,000 yuan. Although making hundreds of molds for Lego bricks is only a development, large companies have more than 100 molds. For the vast number of small and medium-sized enterprises in San Sai Lego, this price difference is a huge capital investment.

Lego building blocks mainly use ABS with unique formula. The prices of different types of ABS vary greatly. The price difference between a ton of materials and other additives is tens of thousands of dollars. This material is compatible with molds. Include material shrinkage, balance between elasticity and rigidity, shrinkage compensation in die design, runner damage, feed speed, cooling, demoulding, etc. Some of them have no complete theoretical innovation, and they must be tested and explored slowly. The secrets of Lego raw materials are kept secret. Domestic imitators obviously adopted the secret recipe of ABS and its traditional mold design method.

But there is no purposeful improvement. Secondly, the result is that the appearance is similar, but the coordination between toy particles is not as good as Lego. The flat area will deform and the circular area will shrink. This is the result of constant accurate and ruthless imitation. Many manufacturing industries have similar problems. It takes 20% time to achieve 80% effect. However, it usually takes 80% time to fill the last 20% vacancies. This is why many domestic products have low cost and acceptable effect, but there is always a very obvious gap with foreign products.

In fact, injection mold processing is more important, which depends on the level of the foundry company or its own manufacturing, which is less harmful to the cost than molds and materials.