9 familiar details on appliances but few people know how to work

New clothes always have a small piece of cloth attached, bottles are often concave at the bottom .

Handle holes of pots and pans : There are two main effects are to help you hang them on the rack and ladle when cooking.

Dents at the bottom of the bottle: Help the bottle stand better than flat-bottomed bottles.In addition, this detail helps sediment deposit to the bottom, reducing harm to alcohol, water.

Plastic liners in the bottle cap : If you do not use pads, the water in the bottles is easy to leak out.As a result, manufacturers can transport, distribute filtered water and fresh water to many places.

A small piece of cloth attached to clothes : Do you think the manufacturer is worried about your clothes being torn and needing a patch?The practical use of this piece of cloth is to help you test the reaction of washing powder with new clothes.

Puncture on ballpoint cap : Many people, especially children, often have a habit of biting and are able to swallow the pen cap and choke.The hole will allow a small amount of air to enter, preventing you from choking when you encounter a problem.

Two small holes on the sports shoes : The main effect is ventilation, which helps the users' feet not be secreted, sweat less.

Small bags in jeans : Initially, creative jeans designers detail this for cowboys in the West (USA) to have a watch. Rivets : Jeans are loved by workers because of their high durability.However, they complained that the area of ​​the pants pocket was worn out quickly.Therefore, tailors have attached studs, which help reinforce the points of impact.Thanks to that, jeans look more personal and firm.

"Wings" on Apple's charging device : The US technology firm is known for its minimalist design.They devised a way to make the coil charge neatly and not be tangled when removed.

F and J keys have floating edges : Your two index fingers are placed on these 2 keys, the other fingers will be distributed in the surrounding positions.This is an optimal way for you to type with 10 fingers without looking down at the keyboard.