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目前显示的是 十二月, 2022的博文

What are the types of cable materials?

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There are several different  cable sheaths  on the market, all of which serve different purposes. Understanding the differences will help you make an informed decision when selecting the right cable for your requirements. This guide explains the differences between some of the most common types of sheaths used to make cables.   PVC Cables About  PVC Polyvinyl chloride (PVC) is one of the most widely used polymers in the world, thanks to its versatility, low manufacturing costs and ready availability. The raw materials used to manufacture PVC are the salts and oils used to produce ethylene and chlorine. Chlorine is one of the group of elements called halogens, which are highly reactive with other elements and can be used to form different compounds. Ethylene and chlorine combine and polymerize in a process that produces what we know as PVC. pvc has excellent water and oil resistance and good tensile strength, and can be easily combined with other additives to modify m...

Mercedes Benz Brake Discs and Pads information

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  Mercedes has been the global market leader in the automotive industry for many years and continues their reputation for creative   design   and quality cars. Mercedes continues to produce some of the most admired vehicles and parts in the automotive market. Their disc brake parts and assemblies are an essential part of all Mercedes vehicles. Every brake component or component deemed damaged or faulty must be diagnosed as soon as possible. More specifically, Mercedes' front disc brakes have their own atypical symptoms. Also, the front disc brake pads provide most of the stopping power on all Mercedes cars and generally wear out faster than the rear brake pads. Mercedes Benz Brake Discs and Pads  can show early symptoms of a problem if you know what to look for. One of the easiest ways to diagnose any problem is to pay attention to any unusual noise from the brakes while driving normally. Disc brakes that have worn out over time or that work when overheated can make ...

various information about scaffolding and platform

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What are Plastic Seedling Trays?

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  What Types of Plastic Seedling Trays are There? 1. Plastic seedling trays with holes  - seed trays with holes allow for adequate drainage but keep the soil moist enough for the seeds to germinate. Solid seed trays with drainage holes are best for growing multiple seeds in one place. The downside is that seedlings don't have individual cells, so their roots get tangled as they grow. 2. Plastic seedling trays without holes (leak-proof seed trays) - plastic seedling trays without drainage holes will not allow any drainage. Plastic seedling trays without holes are best for laying cells flat (also known as plugging). Because it has water, it can be used to collect excess water from watered seeds, or it can be used to water from below. 3.  Mesh seedling trays  - the mesh seedling trays allows water to drain easily. Mesh seed trays are best for holding multiple individual containers (pots). The downside is that the holes in the mesh seed pan are too large to hold the soil...