If the board of directors approves the construction plan, it should have been constructed in advance, and the low-grade ore stockpiled can be used for trial production, which is more beneficial to the project.
If the board of directors approved the plant construction plan, should have been built in advance, the pile of low-quality ore can be used for trial production, more favorable to the project.
If the board of directors approved the plant construction plan, it should have been built ahead of time, and the part of low-grade ore stockpiled can be used for trial production, which is more beneficial to the project.<br>