Shenzhen Yindu Silver Recycling Company   

        keywords Abstract: China Yindu integrity gold-plated silver plated recycling company, Shenzhen recycling, recycling, recovery, Shenzhen Shenzhen silver gold recovery, recovery of gold, silver gilt recovery. Identify the gold is very complex, commonly known as gold "Qiqingbahuang nine five red", from color, OK, listen, observe, appearance, hardness, etc. see identification. For example, hearing it, gold throw cement, a dull patter, sound no rhyme, commonly known as dead sound, rather low purity or fake gold there is rhyme, and the sound of a long and sharp, a slight rebound. For example, 200 grams of gold, he can be alloyed with 100 grams of iridium and tungsten, because iridium and tungsten and gold proportion is similar, in general it is difficult to understand.
you in the middle of cutting it, he put the iridium doped on both sides on both sides, you cut it, he mixed intermediate. This year at the beginning of 3, there are people with a 3 200 grams of gold bars to pawn, with several modern technology instrument detection, is gold, but I always feel that one there's something wrong again, hearing, gold throw to muffled sound, rather than pure gold is crisp, by experience, that here the adulteration. Consent will gold bars, diagonal cut, and 200 grams of gold bars, 100 grams of iridium doped! A loss of more than 30000 guests. (China Yindu integrity recycling company)