Multiple case function in sqlserver

Example::::

SELECT GreyReceiveTypeName,

FROM TBL...XYZ

 CASE GreyReceiveTypeName WHEN 'Bulk' THEN 'Bulk' WHEN 'Sample' THEN 'Sample' WHEN 'Order Related Sample' THEN 'Sample' 

WHEN 'Others Sample' THEN 'Sample' WHEN 'RETURN' THEN 'RETURN' WHEN 'Replacement' THEN 'Replacement' WHEN 'Coller Cuff' THEN 'Coller Cuff' WHEN 'Coller Cuff' THEN 'Short Qty'

WHEN 'Process Loss Qty' THEN 'Process Loss Qty'  ELSE '' END ProductionType