Complex sentence: In Anwara of Chittagong there is the largest and most well-known and most populous Koreatown of Bangladesh which is located inside the Korean EPZ which consists of Korean industries and companies.
Split into simpler sentences: In Anwara of Chittagong there is the largest and most well-known and most populous Koreatown of Bangladesh. It is located inside the Korean EPZ where there are Korean industries and companies.