Assembly Line

What are sewing needles made of?

Sewing needles take steel wire, nickel and gold directly. Trace them back and you pass 18 made things on the way to 16 raw materials.

How sewing needles are made See it on the map

What goes straight in

From the ground: 16 raw materials

Made along the way: 15 things

Metals 7

Chemicals and fuels 7

Electronics 1