When the blocked filter is replaced, the pressure suddenly drops and the temperature of the molten material may also drop, causing a change in the size of the product. In order to maintain the same size of the product, the screw speed of the extruder can be adjusted, and.....

The stainless steel door is a door made of stainless steel plate material. It is the same as the ordinary door. The main material is stainless steel plate. The filling inside is usually foam or honeycomb paper. It has a solid feeling when knocking. In the middle is the door flower, the door flower .....

The annual flood season will come again. Each local government is holding a defense conference in the flood season. How to ensure local security during the flood season this year and how to ensure that the people’s property is not damaged is a top priority for government agencies. According .....

Since the 1990s, composite materials have substantially invaded the building products industry, including the production of doors and windows, decorative materials, and siding. The unprecedented strength and flexibility of these materials, as well as the low maintenance .....

The ancient people's locks, whether it is wood craft, smelting technology, design or anti-theft function design, are extremely practical and scientific. The Chinese ancient lock culture has sparked the brilliance of the wisdom of the Chinese nation, and the wisdom of the ancestors is admirable. .....

As a workplace, the first prerequisite is to build an elegant and comfortable office environment for employees. For example, some companies will spread carpets on the floor. This not only makes the office environment better, but also makes the company look even taller. So what kind of office carpe.....

  一是做表面有字的料。常见的PE或PP粒，表面有字的基本上都比没字的便宜一千多，只要我们è�.....