Shangzhi Pearl Pen Industry Co., Ltd. was founded in 1988, is a research and development, production, sales and international trade in one of the professional pencil lead production enterprises, the factory is located in Shangzhi City, sales and research and development base is located in Harbin City. The company mainly engaged in a variety of pencil lead, professional drawing pen, gift pen set and so on. Among them, the sales of graphite pencil lead accounted for one-third of the national production and sales of pencil lead for five consecutive years, and carbon pencil lead accounted for three-quarters of the national sales, and it is the largest supplier of graphite and carbon pencil lead in China.