Lock, general, protector of property. Key is its companion, a key to open a lock, perfect match. Key is portable? Use key chain to hang them together, and hang some small cards and ornaments on it, which is practical and convenient. Ordinary Keyrings become new and unique when they are in the hands of creative inventors.

Nowadays, many people like to visit mountains and rivers, especially in summer. If you are not careful, the key in your pocket falls into the water. It's really "Pepper falling into rice - mafan (annoying)". Don't worry, the inventor will save you from danger.

There is a flat gadget hanging on the key chain. It is not amazing and ordinary. But once it falls into the water, it's amazing. It turns out that there is a mystery hidden in the flat box. After falling into the water, the box will open toward both sides, and a cylindrical plastic bag in the middle will automatically inflate. Due to the buoyancy of the fully inflated column, it will pop out of the water, high and high. Ah, the key floated up on its own! The owner was overjoyed to find it again. The key chain of "life buoy" is so wonderful!

The key chain not only has a "life buoy", but also a "seeker".

Nowadays, people have a lot of things to do. Sometimes they can't find their own keys. It's a big thing! If you leave home, you can't go back home without a key. If you leave it outside, you can't find it for the bad elements. The consequences are even more serious. So, looking, looking, anxious, sweating and in a hurry. Inventor in key chain_ Hang such a thing on it, and hold the key hand in hand with the mobile phone. I can't find the key

"Whoa, whoa!" yelled, and followed the sound, "Oh, here it is."