Hi-Polymer graphites are a perfect combination of synthetic resin, graphite and carbon, creating in this way extremely durable and at the same time flexible pencil cartridges. They do not contain harmful substances.
The Japanese company Marvy presents a drafting pen in a modern, ergonomic housing. Its pigment ink meets the highest quality standards: it is waterproof, non-toxic, quick-drying, resistant to exposure to light and sunlight.