“铝是当代最有权威的材料”,这是最近在英国举行的食品包装会议上铝箔的用户们惯用的一句话。同样,这种观点也适用于铝挤压件和薄板。上述三种金属压力加工产品正向各种市场广泛地提供着受欢迎的廉价产品,满足着现今市场的某些需求。也许, “Aluminum is the most authoritative material in the contemporary era,” a phrase used by users of aluminum foil at food packaging conferences recently held in the United Kingdom. Again, this view applies to aluminum extrusions and sheets. The above-mentioned three kinds of metal pressure processing products are widely available in various markets with popular and cheap products to meet some of the needs of the current market. Maybe,