圆珠笔值钱吗?若问您这个问题,您肯定会说:“仁兄,10块钱够买一把好吗?”但若问您圆珠笔笔尖用什么材料,估计您只会耸耸肩回答:“大概是不锈钢吧”。其实,笔球珠的主要成分是碳化钨,是一种最接近钻石的材料。看到这里您肯定会感慨:“厉害的了我的圆珠笔”。不过您未必知道,这颗小笔头曾难倒了中国制造,成为横在制造业升级路上的绊脚石。 If you ask this question, you will certainly say: “My dear friend, 10 dollars enough to buy a good?” But if you ask ballpoint pen tip with what material, it is estimated that you will only shrugged answer: “It’s probably stainless steel.” In fact, pen ball is the main component of tungsten carbide, is the closest diamond material. You will certainly feel the emotion of seeing here: “amazing my ballpoint pen ”. However, you may not know that this little proptier had stumped China-made and became a stumbling block to the path of manufacturing upgrading.