https://consumerreports.org/
https://www.bbb.org/
https://www.jdpower.com/
http://www.ambest.com/

https://reviewmeta.com/ 購物評價
http://www.resellerratings.com/ 購物評價
http://thewirecutter.com/ 電器評價

http://www.manta.com/ 查詢公司