Place Of Origin: China
Types Of: Spiral, Coil, Cylinder
Material: High-carbon steel or stainless steel (e.g., 302/304 SS) for durability and corrosion resistance. Alternative: Music wire for high tensile strength and flexibility.
涂层: 镀锌或电镍镀镀金，以耐腐蚀。可选：彩色涂料，以供美学吸引力。
Use: Provide consistent retraction and extension mechanism for ballpoint pens.
应用: Ballpoint pens, retractable writing instruments, and other small mechanical devices.
| 销售单位 | : | Piece/Pieces |
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