Shangzhi pearl Pen Co., Ltd. was founded in 1988. It has established pencil board factory, pencil factory and lead lead factory, and improved the vertical production system of pencils. So we know more about every detail of the pencil making process, and we know more about what kind of lead is needed by pencil manufacturers and consumers. After years of painstaking research, our company has developed a set of unique patented equipment and developed a perfect quality management and control system, which not only ensures the quality of our products leading in China, but also produces a series of high-grade graphite lead core products, which are exported to Europe, America, Australia, Southeast Asia and Africa, and highly praised by international well-known pencil manufacturers. All products meet the testing standards of EN71-3, EN71-9, ASTM f963-11, MSDS, LHAMA, SVHC, PAHs and reach, and have passed ISO9001 quality system certification and factory inspection by bureau veritas. Our comp...