Mysterious Thing · PTFE Suture
There is a rare thing in the world, called PTFE suture. Its quality is special, tough and slippery, and it is not invaded by foreign objects. It is difficult to damage by water and fire, and it is difficult to get close to bacteria and poison.

This thread is the first to appear, and everyone is different. When doctors see it, they think of using it for wound suturing. In the past, sutures were perishable or uncomfortable to the wound, but PTFE sutures have no such worries. With its seam, the wound heals well and leaves few scars.

Craftsmen also love this thread, because it is slippery and tough, it can be used for the production of clever objects. It is exquisitely braided, and the silk is not messy, strong and durable. It is also useful for things that are at sea or far away, and it is not afraid of the erosion of sea water. The ropes and sails are reinforced by it, so that the ship can be safe.

However, this line is not easy to come by, and it needs a wonderful skill and fine craftsmanship to make it. Its secrets are not passed on, but only a few skilled craftsmen know it. Those who obtain it cherish it and hide it, and it is not a treasure that is difficult to exchange. It is because although it is good, it is rarely used in the world. However, those who use it praise its ability, thinking that it is a god.