We write with ball pens.

我们用油笔写字。

We mainly produce ball pens, water pens, injection mould and many kinds of plastic parts etc.

我公司专业生产各种圆珠笔、中性笔、文教产品、模具制造、各种塑料产品加工。

We have to complain about the inferior quality of the ball-pens.

我们不得不投诉圆珠笔的低劣质量。

Why not?need some stationery. I run out of some paper and ball pens.

我想买一些文具用品，我的纸盒圆珠笔都没了。

Please send us all the data concerning your Hero Brand fountain pens and ball pens so we can introduce your products to our customers.

请寄给我们有关你方英雄牌自来水笔和圆球笔的资料，以便我们向顾客介绍你们的产榀。