Refer

ขอขอบคุณข้อมูลดีๆ จาก

http://romchatit.brinkster.net/Products.htm

http://mintnut555.wordpress.com/%E0%B8%9C%E0%B8%A5%E0%B8%B4%E0%B8%95%E0%B8%A0%E0%B8%B1%E0%B8%93%E0%B8%91%E0%B9%8C%E0%B8%88%E0%B8%B2%E0%B8%81%E0%B8%81%E0%B8%B0%E0%B8%A5%E0%B8%B2%E0%B8%A1%E0%B8%B0%E0%B8%9E%E0%B8%A3%E0%B9%89%E0%B8%B2/

https://www.google.co.th/?gws_rd=cr&ei=b7CtUvnVJI3TkgWcnoHYBg