lead are graphite and clay. According to the national standard pencil, it is divided into 18 models according to the graphite concentration. Later, it was made into a fine pencil core and widely used in the replacement core of the automatic pencil. Now, the pencil core has a new member - the resin lead.

The resin lead core is made of high-quality graphite and resin and advanced core-making technology, so that its concentration and saturation are kept at a reasonable ratio; the refill is smooth, tough, and not easy to break; the font is clear and clear, and you can experience extremely smooth writing. feel. Resin is a phenolic structure chemical that is widely used in light industry and heavy industry. It is also often used in our daily life, such as plastics, resin glasses, and coatings. The resin lead core can effectively reduce the lead content in the raw materials and contribute to the uniform fusion of various substances in the lead core.

The resin lead core has the advantages of high strength, black concentration, smooth lubrication, clear writing, and favorable vision protection. It is an ideal lead material. Lepusheng stationery resin lead core is lead-free, environmentally friendly and non-toxic, and is the first choice for consumers to use stationery safely.