Photo taken on Jan 10, 2017 shows ballpoint pen tips made of homemade stainless steel at Taiyuan Iron and Steel (Group), or TISCO, in Taiyuan, North China's Shanxi province. China, the world's biggest manufacturer of ballpoint pens, has finally developed its own pen tips, ending a long-term reliance on imported ones. TISCO said it has mastered the production of steel components for pen tips after trying for five years. [Photo/Xinhua]