... eco promotional stationery set with ruler and pens 1. Eco friendly 2. with ruler and pens 3. For gift promtion 4. ... paper pen Table of eco-friendly products:1. Bamboo series: Pens, Notebooks, Rulers, Bottles, Name card, Bamboo fan,veneers sheets ... so on2.Recycled paper series:Highlighter pens, Ballpoint pens, Notebooks, Stationery sets and so on3. Biodegrdable series: Pens, PLA luggage tag, Paper clip, ...