Silver directional basic rule: the larger the particle, the larger the positive side of the lightness difference, the stronger the directivity; otherwise weaker, Yiwu silver wholesale prices, the stronger flash, positive side lightness difference, the stronger the directivity, Yiwu silver wholesale orders, otherwise weaker. In the 1970s and 1980s, Yiwu wholesale silver Which is good, the widespread use of cast iron radiators, radiator to prevent rust paint surface will be painted silver. In recent years, Yiwu wholesale silver, with the development of modern science and technology, radiator production process with each passing day, the surface coating has rarely used this silver paint, turned to the use of color and diverse, colorful paint.