High qualitysuperfine zinc dusts are produced with electric furnace crude zinc pig as raw material by using distillation condensation technology.
以电炉粗锌为原料，采用精馏-蒸发-冷凝法生产高品质超细活性锌粉。
2
The number of nep and impurity is a import index which influences superfine yarn quality.
结杂质是影响特细号纱成纱质量的一项重要指标。
3
When super-fine steel slag powder and high-quality fly ash were added into concrete together, the performance of concrete could be improved further due to the synergistic effect.