Complex sentence: NJIT has a summer student exchange programme with Heritage Institute of Technology, Kolkata, Kolkata every summer in the month of June when students from HIT-K visit NJIT to do summer training/internship at NJIT as part of their university WBUT's course curriculum.
Split into simpler sentences: NJIT has a summer student exchange programme with Heritage Institute of Technology, Kolkata. Every summer in the month of June, students from HITK visit NJIT to do summer training/internship at NJIT as part of their university (Wbut's) course curriculum.