CEO Bae Byung-in │ Business registration number 327-81-01408 │
Address 3, Unhyeongongdan 1-gil, Ungchon-myeon, Ulju-gun, Ulsan, South Korea
TEL 052-266-1007 │ FAX 052-268-1002 │ E-mail yooin@yooin.co.kr