As an amateur, she won a gold medal at the 2014 Asian Games in the women's team event with Budsabakorn Sukapan and Benyapa Niphatsophon and another bronze medal in the women's individual event.

[4] Sangchan competed at the 2014 Asian Games in Incheon and won the first ever gold medal in golf for Thailand in the women's team event with Budsabakorn Sukapan and Benyapa Niphatsophon.

At the 2014 Summer Youth Olympics in Nanjing, Sangchan won a bronze medal in the women's individual event.

[5] Sangchan turned professional in 2015 and participated in the China LPGA Tour in the same year.

Supamas was in the top three of the China LPGA Tour Order of Merit for three consecutive years from 2016 to 2018 and was awarded entries into the U.S. Women's Open.