Yau Shing Commercial Centre (友誠商業中心) is a grade-B building located at 51 Sai Yeung Choi Street South (西洋菜南街) and Nelson Street (奶老路臣街) in Mong Kok district. This is a 20-storeys plus 1-storey below ground building for Commercial use, offering a range of commercial property spaces that suit various business needs. This building is accessible by alighting at Mong Kok (旺角) MTR train station. For air-conditioning, this building mainly uses central air-conditioning during business hours from 8:00-18:00 for Monday to Friday, 8:00-14:00 for Saturday. Additional independent air-conditioning for flexible business hours may be possible, subject to technicality and space availability.