0.8ร1ร1.2ร1.5ร1.7ร2ร2.5ร1 min 40 secโก๏ธ2 min 5 sec1 min 40 sec1 min 23 sec1 min 6 sec58 sec50 sec40 secIntroduction0.8ร1ร1.2ร1.5ร1.7ร2ร2.5ร1 min 40 secโก๏ธ2 min 5 sec1 min 40 sec1 min 23 sec1 min 6 sec58 sec50 sec40 secIntroductionYour user agent does not support the HTML5 Video element.