Method: GET_MATERIAL_RANGE
Method: SWITCH_MATERIAL_RANGE
Method: INSERT_MATERIAL_RANGE_ITEMS
Method: UPDATE_MATERIAL_RANGE
Method: UPDATE_MATERIAL_RANGE_ITEMS
Method: CLASS_CONSTRUCTOR
Method: GET_MATERIAL_FROM_BAL
Method: DELETE_MR_ITEMS_BY_ID
Method: DELETE_MATERIAL_RANGE
Method: SWITCH_OTHER_BUYER_MR
Method: DELETE_MATERIAL_RANGE_ITEMS
Method: GET_MATERIAL_RANGE_ITEMS
Method: INSERT_MATERIAL_RANGE
Method: INSERT_NEW_MATERIAL_RANGE
Method: GET_FROM_HANDLER
Method: DELETE_MATERIALS
Method: CHANGE_MATERIAL_RANGE