av在线播放亚洲_а√天堂资源中文最新版地址_2019中文字幕超清在线观看_欧美黄片在线视频

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  • What is a casting wax mold

    Casting wax molds are an important part of the precision casting or investment casting process and are often used to create wax models that are shaped in the same way as the final metal parts that nee

    2023/12/07 hooren

  • Nylon double 6 and single 6 which toughness is good?

    Nylon 6 (polyamide 6, PA6) and nylon 66 (polyamide 66, PA66) are the two most common types of polyamides, and they have their own unique performance advantages. Toughness usually refers to the ability

    2023/12/07 hooren

  • Advantages and disadvantages of PA12 plastics

    Polyamide 12 (PA12) is a long-chain polyamide that belongs to the Nylon family. It occupies a place in engineering plastics because of its unique physical properties and excellent processing propertie

    2023/12/06 hooren

  • How to choose injection mold manufacturers?

    Choosing an injection mold manufacturer is a key step, which is directly related to product quality and production efficiency. The following are some factors that should be considered when choosing an

    2023/12/04 hooren

  • What material is PMMI

    PMMI stands for polymethylmethacrylate Isomers (Poly(Methyl Methacrylate Isomers)) and usually refers to a polymer material that is similar to ordinary polymethyl methacrylate (PMMA, also known as acr

    2023/11/30 hooren

  • What are the main materials for injection molding optical lenses?

    Injection molded optical lenses are typically manufactured using the following highly transparent plastic materials, each of which has unique optical and physical properties:1. Polycarbonate (PC) :Hig

    2023/11/29 hooren

  • Detection methods for optical lenses

    Optical lenses as an important part of industrial development, its material applications are also diverse, in addition to the familiar glass, many are made of plastic through injection molds.The inspe

    2023/11/29 hooren

  • What are the common problems of injection molding process?

    The injection molding process is a very efficient and common method in the production of plastic parts, but it may also encounter some common problems in the actual production process, which may affec

    2023/11/28 hooren

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