It's the same all over the world. People using any company for the first time want reassurance.
That's why so many people look at The International Register of Quality Assessed Professionals (IRQAP).

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Name	Course Name	City	Country	Certificate No.	Date of Certificate	Photo	Download
Gaurav	Design	Nandura	India	1111	01/01/2000
Vaibhav	Java	Nandura	India	2222	02/02/2000
vishal	Develop	Nandura	India	3333	03/03/2000