The experiment shows that adopting protective casting technology can reduce reoxidation and improve the internal and surface quality of block.
试验结果表明采用钢包注流保护浇注技术可降低二次氧化，提高铸坯内在和表面的质量。
A is a surface protective film with low adhesive, which is mainly made of special olefin polymerization processed by our independently developed multi-layer coextrusion technology.
是低粘表面保护膜，主要是特殊烯烃类聚合物采用自主开发的多层共挤技术制造而成。
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