0.8ร1ร1.2ร1.5ร1.7ร2ร2.5ร1 min 34 secโก๏ธ1 min 58 sec1 min 34 sec1 min 18 sec1 min 3 sec55 sec47 sec37 secIntroduction0.8ร1ร1.2ร1.5ร1.7ร2ร2.5ร1 min 34 secโก๏ธ1 min 58 sec1 min 34 sec1 min 18 sec1 min 3 sec55 sec47 sec37 secIntroductionYour user agent does not support the HTML5 Video element.