Low Price 10*65mm Soft Pastel Washable DIY Chalk for Blackboard

Non toxic chalk is made by solidifying and drying pure gypsum with water, using edible gypsum. Most teaching abroad has been using this type of chalk since elementary school. Non toxic chalk belongs to advanced chalk, and it is non-toxic in the dust pollution of classroom chalk. The dust generated by it can be directly excreted by the human body through excretion without remaining in the body. Even the water in production causes zero pollution to the river.

Regular chalk is prone to moisture absorption, decreased hardness, and easy breakage when stored for a long time. The blackboards used in schools include cement boards, wooden boards, and ground glass boards. Due to different levels of smoothness on the surface of the blackboards, the softness and hardness of the chalk are also required. The new generation of dust-free chalk can change its softness and hardness at will, and will not slip or break easily when used on various blackboards. It also writes fluently, effortlessly, and has a good hand feel. Dust free chalk is a high-tech product that has been successfully developed in addition to cosmetic materials used in production. Environmentally friendly, non-toxic, dust-free, it is an ideal teaching and office supplies for modern teaching.