Hii..

If we compare Haldia Institute of Technology and Techno India saltlake then there are many factors which can decide whether which of the college is better.

If you are interested in higher studies or doing doctorate, research or phd then you should go for Haldia Institute of Technology. Infrastructure wise and college culture wise Haldia Institute of Technology is better. 

But if you want a job after 4 years of Engineering then go for Techno India saltlake. Placement wise Techno India saltlake is better as it is a private college located in Kolkata city and in the software engineering college provides good placements. 

Hope it helps  

Best of luck