0.8ร1ร1.2ร1.5ร1.7ร2ร2.5ร11 minโก๏ธ13 min11 min8 min 47 sec7 min 2 sec6 min 12 sec5 min 16 sec4 min 13 secIntroduction0.8ร1ร1.2ร1.5ร1.7ร2ร2.5ร11 minโก๏ธ13 min11 min8 min 47 sec7 min 2 sec6 min 12 sec5 min 16 sec4 min 13 secIntroductionYour user agent does not support the HTML5 Video element.