641 Hougang Ave 8 (1) 641 Hougang Ave 8 (2) 641 Hougang Ave 8 (3) 641 Hougang Ave 8 (4) 641 Hougang Ave 8 (5) 641 Hougang Ave 8 (6) 641 Hougang Ave 8 (7) 641 Hougang Ave 8 (8) 641 Hougang Ave 8 (9) Gallery641 Hougang Ave 8