alamat
Tambang China:
C, Lantai #2, Gedung H2, Hongfa Tech Park, No 32, Tangtou
Road, Shiyan Town, Bao'an District, Shenzhen, China, 518108
Vietnam pertambangan:
Lot CN2, Yen Phong Industrial Park, Dong Phong Commune and, Long Chau Commune, Yen Phong District, Bac Ninh Province, Vietnam