 
       
       
        The Second Conduct Rule prohibits businesses with a substantial degree of market power from abusing that power by engaging in conduct that has the object or effect of harming competition in Hong Kong.
       
       
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         The Guideline on the Second Conduct Rule
        
        provides:
       
       
        - 
         The Competition Commission's approach to defining the relevant market (which also applies to the First Conduct Rule and the Merger Rule).
        
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         Guidance on how to assess whether a business has a substantial degree of market power.
        
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         The Competition Commission's approach to certain types of business conduct, including,
         
          - 
           Below-cost pricing;
          
- 
           Tying and bundling;
          
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           Margin squeeze;
          
- 
           Refusals to deal; and
          
- 
           Exclusive dealing.
          
 
- 
         Hypothetical examples to assist understanding of how the Second Conduct Rule will be applied to common forms of business conduct.