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  • Can a pencil lead poisoning?
    Can a pencil lead poisoning?

    Will long-term use of a pencil lead to lead poisoning? This question often bothers some people. In fact, people who have this problem tend to think that lead in pencil lead and lead in pencil lead to lead poisoning. So, does lead contain lead? To answer this, we have to start with the origin an...

    09-26

  • Test specification for resin lead core
    Test specification for resin lead core

    The resin lead core has strict inspection standard: 1. Lead core should be straight, round, smooth, without elbow, fracture, cut surface and so on.

    08-28

  • Test specification for resin lead core
    Test specification for resin lead core

    The resin lead core has strict inspection standard: 1. Lead core should be straight, round, smooth, without elbow, fracture, cut surface and so on.

    07-12

  • Pencil flowers, sweet memories of childhood
    Pencil flowers, sweet memories of childhood

    In pencil writing, the freedom and freedom of the stroke of the pen, the pen touch the paper to make a faint rustling sound, really wonderful enjoyment.

    06-06

  • A type of graphite resin 2B lead core processing characteristics
    A type of graphite resin 2B lead core processin...

    A graphite 2B resin lead processing method is characterized by the following steps: (1) the flake graphite was crushed into graphite powder, the number of the order was 680, and the carbon content was 90-95.

    05-21

  • A type of graphite resin 2B lead core processing characteristics
    A type of graphite resin 2B lead core processin...

    A graphite 2B resin lead processing method is characterized by the following steps: (1) the flake graphite was crushed into graphite powder, the number of the order was 680, and the carbon content was 90-95.

    04-11

  • Why is the lead core of automatic pencil made of resin?
    Why is the lead core of automatic pencil made o...

    Lead core is no stranger to everyone. The lead core is graphite and clay, according to the national standard pencil, according to graphite, the concentration is divided into 18 types, and then it is made into thin pencil core widely used in the replacement core of automatic pencil. Now, the penci...

    03-06

  • Pencil cannot be used in the pen root. Why should there be pencil lead?
    Pencil cannot be used in the pen root. Why shou...

    This is primarily a pencil making process. If not to the end of the core is not in pencil at the end of the hollow, have to control the length of each board slot (at the end of a period of not open), plus one more parts soon groove tools to move up and down to white space.

    01-04

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