As far as global market structure is concerned, the sustainable development of global construction market will stimulate the demand for extrusion products, such as plastic pipes and wallboards, and thus promote the growth of the demand for extrusion equipment. According to the survey, demand for plastic machinery in the United States and Japan will show new signs of recovery, and demand in Western Europe will accelerate in 2019. The sales prospects of double-color disc injection moulding machines in China, India and Russia are promising.

There are many injection machine manufacturers in China. According to incomplete statistics, there are more than 3000. The structure of injection moulding machine is divided into vertical and horizontal.According to the products produced, they can be divided into ordinary injection moulding machine and precision injection moulding machine. The injection volume was 45 ~ 51000 g and the clamping force was 200 ~ 36000 kN. From the view of product processing, there are monochrome, bicolor and precision plastic products. Ordinary double-color disc injection moulding machine is still the leading direction of the development of injection moulding machine, and its basic structure has hardly changed significantly. In addition to continuously improving its control and automation level and reducing energy consumption, according to market changes, manufacturers are moving towards the direction of combination serialization.

As for double-color disc injection moulding machine, China is one of the fastest developing countries in plastic machinery, and the level gap is smaller than that in developed countries. But it mainly refers to ordinary injection moulding machines. In the super-large, special and precision injection moulding machines, some products are still blank, which is the main gap with the developed industrial countries.

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