最老牌的鉛筆Faber-Castell 之製程與品管

CNN Business

11月1日上午3:30 · 

Faber-Castell makes some 2 billion pencils across 120 different colors every year. We take a look inside its factory. https://cnn.it/2Qaw7fo 

品管：需承受2.5公斤的壓力而不變形、斷裂才算合格。