There are a lot of famous stationary companies in the world as there are a lot of students who use stationary products. I will introduce few of some famous stationary companies in the world.
1. STAEDTLER
Staedtler is a German stationary company and it sells a lot of good high quality stationary products which a lot of people love. Some products made by Staedtler are Staedtler rasoplast eraser, Staedtler Grafite Noris pencil, Staedtler Triplus Fineliner Marker, and lots more.
2. Monami
Monami is a Korean Stationary brand which is famous inside in Korea and also outside of Korea. Monami can be lined up with the other famous companies like morning glory which is a another well-known company in Korea or maybe Staedtler too. Some of the renowned products of Monami are Monami 153. 3.3 billion Monami 153 pens have been sold to now(2014). Another recognized product of monami is the monami plus pen 3000 and the monami namepen.
3. Pentel
Finally, the last brand is Pentel. Pentel is a Japanese stationary brand which many people worldwide used. I used to buy products from Pentel, but because of the relationship between Korea and Japan, I try not to buy any products from Pentel and use Korean products. However, Pentel's products are good, too. Pentel is mostly famous for its mechanical pencils.
You should have wrote UNI (Which is Japanese but anyways its the NO.1pen&mechanical pencil brand!!)