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In the globe of metal casting, the selection of ideal materials and innovations is essential to producing top notch castings. In factories, various materials are utilized, such as aluminum casting, which has gotten significant appeal due to its light-weight homes, deterioration resistance, and excel

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WPS Office ???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? ? 1988 ???????????????????????????? 3,000 ??????????????? 2000 ???? WPS Office ???????????????????? 6 ???????????????????????????????????????????????