成人a毛片手机免费播放-成人a毛片在线看免费全部播放-成人a视频高清在线观看-成人a视频片在线观看免费-欧美三级中文字幕hd-欧美三极

Tungsten Ball Pen Bead

Tungsten ball pen bead is a small ball used on ballpoint pen tips to release ink when writing. It has the advantages of high hardness, good wear resistance and long service life. It can be used as a pen tip for ballpoint pens.

Tungsten ball pen bead has many advantages, such as high hardness and good wear resistance. Its density is 2 times that of steel and 50% higher than lead. It is the best choice for a ballpoint pen tip. Ballpoint pens use tungsten ball pen bead to make writing smoother.

tungsten ball pen bead pictureChinatungsten Online is a professional manufacturer and marketer of tungsten alloy. We adopt the international advanced technology to produce. The diameter of the tungsten ball pen bead is 0.38~1.4mm, and the quality is good.

More details, please visit:
http://www.tungsten-alloy.com/tungsten-alloy-ball-pen-bead.html

Comments are closed.

Address: 3F, No.25-1 WH Rd., Xiamen Software Park Ⅱ, FJ 361008,China Copyright ? 1997 - 2025 CTIA All Rights Reserved
Phone:+86-592-5129696,+86-592-5129595;    Email: sales@chinatungsten.com
舊版