How to prove that he is a woman to know the chest

Can you prove yourself a woman? Is to see your face or look at your body, or will see the big aunt? If it is the last one, then it is really super sad reminder Oh! So in the end how to do, to let others know that they are a woman at the moment? In fact, very simple.......

Teach you to identify "qualified" tempered glass!

[China Glass Net] Tempered glass belongs to safety glass. Tempered glass is actually a type of prestressed glass. In order to increase the strength of the glass, chemical or physical methods are usually used to form compressive stress on the surface of the glass.......

Common dyeing jewels and jade

There are many unscrupulous traders on the market. In order to make the gemstones have perfect color, all kinds of jewellery and jade are processed and modified by dyeing means. Therefore, we must train the eye-catching ability, compare and see more, beware of bein.......