Permanent marker

Environment - Friendly Permanent Markers All the permanent markers strictly conform to international standards and raw material required in the production is reusable and environment-friendly.Below are some details listed for reference. Plastic parts All plastic material used in production are subject to EN71 standards,to ensure a good stability and flexibility of the product.Parts match perfectly with each other and there will be no leakage under a pressure of 30kpa. Cap pull is about 15-20N. Shelf life is guaranteed as 18 months. Plastic Coloring Colorants used in the production are all subject to EN71 standards and are all imported.With very special coloring process,all the products are non-toxic with bright vivid colors.Also with the fine quality colorants,there will be no fading,no transference and no change in colors under normal temperature. Ink Imported ink subject to EN71 standards with bright and vivid colors,smooth writing,good resistance to high temperature,quick dry,good adherence to different surfaces such as wood, glass,metal,plastic,ceramic and enamel etc.. Tip All are made form fibre and are subject to EN71 standards.Fine quality nibs help to ensure a nice writing experience with no fork lines,And very important,nibs will neither slip into the barrel under any pressure less than 8N,nor break off under any pressure less than 5N. EN71 BS7272 CONFORMS TO ASTM D-4236 ISO9001 ASTM F963-96A ISO14001