Generations of children and adults have loved playing with Slinky. This classic metal spring toy walks downstairs, alone or in pairs, and makes a slinky sound. First invented by mechanical engineer Richard James in 1943 during an experiment with tension c
1. Use: Suitable for thin plate fixing of simple buildings. 2.heat treatment: yes 3. Major markets: Asia, North and South America, Europe, Africa, Oceania, etc. 4. Rugged and durable: the thread is fastened, the thread is clearly and evenly distributed, a