国产精品久久久久久黄片_国内日韩精品天天更新_免费精品无码AV在线播放_亚洲欧美国产激情91_手机在线的A站免费观看_一本大道香蕉久97在线播放、_依依成人毛片网站免费看_欧美日韩一级自拍_亚洲av成人男人的天堂网站_欧美亚洲另类色国产综合

Hengli

increase

Key words:

Products News

Inoculant


The chemical composition is stable, the quality deviation is small, the graphitization core is increased, and the graphite is refined. Promote gray cast iron to obtain A- type graphite, promote ductile cast iron graphite roundness, improve the spheroidization level, and improve the spheroidization rate. Reduce the tendency of white mouth, improve cutting performance, reduce the sensitivity of casting wall thickness, and make the organization uniform.