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GB 5069 Magnesium Refractories Chemical Analysis Method
General Regulations on Packaging, Marking and Quality Certificate of Metallurgical and Mineral Products GB 5689
Light burnt magnesia powder can be divided into nine grades according to its chemical composition: QM-96, QM-95, QM-94, QM-92, QM-90, QM-87, QM-85, QM-80 and QM-75.
Physical and chemical indicators should meet the requirements of Table 1.