Rail giant under pressure amid scandal in which subcontractor allegedly substituted tiles used for Tung Chung East station project.

Subcontractor reportedly procured tiles manufactured in mainland China, instead of German-made brand specified in contract.

Rail giant under pressure amid scandal in which subcontractor allegedly substituted tiles used for Tung Chung East station project.

Lawmakers call on rail giant to investigate reports that subcontractor allegedly substituted tiles used for Tung Chung East station project.