by studying a group of consumers by

by studying a group of consumers by region both in develop and developed countries.
In developing countries that do not use the products as an example,
but it will take something else,
like herbs and salt instead of toothpaste.

ผลลัพธ์ (อังกฤษ) 2:

by studying a Group of Consumers by Region and develop both in developed Countries.
In developing Countries that do not use the products As an example,
but it Something Else Will take,
like instead of Herbs and Salt Toothpaste.