If you're looking for a way to get a good deal on your own, it's important to know what you're looking for.
Copper's capacity words are a little partial red and purple.
2, density.
The density of different kinds of different.
3, the nature of different.
In
the fire roast (do not use candles to roast), blackened copper is
plated, black material is copper oxide. Did not change color is
gold-plated, real gold is not afraid of fire.
Gold
plating, is a decorative process, is also one of the common vocabulary.
Initially, it refers to the surface of the object plated with a thin
layer of gold. Later, it was also used as a metaphor for a person going
to a certain environment for further study or exercise just to get a
false name.
1. color (bai appearance), visual observation 2, solid du quality (most of the iron alloy zhi) can be used with a Tao
magnetic version of the article, such as magnets, with magnetic tools,
etc., the right to discriminate. 3. weight, i.e. density. 4, manufacturers, general purchase of copper supplies to go to the
formal manufacturers, formal channels to buy. And carefully check
Copper
mainly depends on his color, purple copper, red copper is good copper.
There are brass, color hair light. There are also copper plated with a
zinc, some tin, white, there is a low-quality copper, copper inside
impurities, with a bend in the hand broken into two, which has black
impurities.
