FACTORY 1: Dao Tu Commune, Tam Duong District, Vinh Phuc Province, Vietnam.

FACTORY 2: Chuyen Ngoai Commune, Duy Tien Town, Ha Nam Province, Vietnam.

FACTORY 3,4&5: Am Ha Villages, Ha Hoa District, Phu Tho Province, Vietnam.

FACTORY 6: Yen Binh District, Yen Bai Province, Vietnam