Many factors affect the price of metals, such as supply and demand. When there is a ready supply of metal for manufacturers to buy, scrap prices are not as high as they would be during shortages or increased demand. Prices also depend on your geographic area, metal quality and time of year. Not all metals are created equally. Your copper wiring may be made of pure copper, while the pipes and plumbing fixtures in an older house may be a copper alloy, such as brass, cut from other metals.
汽车制造商、建筑业和其他制造业工作可能会受到寒冷天气的影响，从而减慢生产速度。因此，夏季的产量往往更高。你可能想把你的废金属保留到夏天，看看你能不能得到更好的价格。
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