Interior Space and Exhibition Design HAESL Office Office by CTRC Design Consultant Ltd. HAESL Office is an office interior design in Hong Kong, covering an entrance lobby and two floors of workplace with a total net area of about 789 square meters. A large central column between two glass doors is treated as a feature column inspired by an engine, paired with a fan shaped ceiling. Meeting rooms and manager offices use glass partitions with switchable film, giving instant privacy and clear glass for natural light. A showcase presents a retired engine fan and scrap components, linking the interior to aircraft engine repair work.