Share: Title:Barking Dog Experiment (2 L Scale) - Dr Kelvin Lau Duration: 0:06 Plays: 2K views Published: 9 years ago Download MP3 Download MP4 Simillar Videos ▶️ 5:20 Kau Untukku 2006 - Kelvin Lau 2K views • 3 years ago ▶️ 17:14 Kelvin Lau - Robotic Assisted Bronchoscopy 2K views • 3 months ago ▶️ 4:13 【暑期課程】dr. Kelvin Lau 化學 2014 暑期課程 2K views • 10 years ago ▶️ 1:34 Magic Of Chemistry: Kelvin Lau - 全港no.1最多lv5/ Lv5*/ Lv5**的博士級講師‧真正市場領導 2K views • 8 years ago