and there are a large number of related companies in my country

Toner, also known as toner, refers to a powdery substance made of charge regulators, polymer resins, additives, carbon black and other materials and used for imaging and fixing. Toner is a printing and copying consumable. It has the advantages of small friction coefficient, strong curing power, and good electrical properties. It is widely used in imaging and fixing equipment such as electrostatic copiers and laser printers.…