Upvote:4
First, ECR/ECNR is only relevant for Indian authorities (you require clearance from them), not for foreign authorities.
Second, as stated by Burhan Khalid, it is only relevant if you travel for employment, and only to 17 specific countries (not just Middle East). Taiwan is not in this list, and you're only applying for a visit.
Indian immigration would need to see your roundtrip ticket to Taiwan.