Old nuo is better than new ping cong. Is that true?
@bnc89882 жыл бұрын
这个要看场口了,致密度的问题
@eworukhenedy10942 жыл бұрын
Yeah, you are right. More important is inside. 密度 make the rock different. The more underground the better. 密度 make the rock different. Doesn't know which place rock is better.