SPHC冷轧基板的生产走RH还是走LF

SPHC冷轧基板的生产走RH还是走LF，哪个综合成本更低？包括冶炼过程的控制难度。

I'm running an English team called Senior Wri-English, or in Chinese, "高端书面英语". You can find this team through 【外语学习|英语写作|Senior Wri-English】. We can be added to three teams at the same time, so we aren't opposite but cooperative.