Why is The Bottom Plate of All Steel Raised Floor Hemispherical? — TitanFlor Why is The Bottom Plate of All Steel Raised Floor Hemispherical? — TitanFlor titanflor2020-04-08T17:02:21+08:00 Why is The Bottom Plate of All Steel Raised Floor Hemispherical? The outer shell Why is The Bottom Plate of All Steel Raised Floor Hemispherical? — TitanFlortitanflor2020-04-08T17:02:21+08:00