Hai Yen LTD Address: Khu Vinh Sinh, Mao Khe Town, Dong Trieu Town, Quang Ninh Province Enterprise code: 5700371520 Phone: 0203871084 Representative: Dao Minh Hai Adress: Khu Vinh Sinh, Mao Khe Town, Dong Trieu Town, Quang Ninh Province Mao Khe Town, Dong Trieu Town, Quang Ninh ProvinceFounding date: 21 - 12 - 2001