USD in banks increases slightly, how is the "black market"?

Refer to the popular addresses for Foreign Currency Exchange - USD Buying and Selling in Hanoi :

1. Quoc Trinh Ha Trung Gold Shop - No. 27 Ha Trung, Hang Bong, Hoan Kiem District, Hanoi

2. Gold and Silver Fine Arts - No. 31 Ha Trung, Hang Bong, Hoan Kiem District, Hanoi

3. Minh Chien Gold and Silver Store - No. 119 Cau Giay, Cau Giay District, Hanoi

4. Thinh Quang Gold and Silver Company - No. 43 Ha Trung, Hang Bong, Hoan Kiem District, Hanoi

5. Toan Thuy Store - No. 455 Nguyen Trai, Thanh Xuan, Hanoi and No. 6 Nguyen Tuan, Thanh Xuan District, Hanoi

6. Bao Tin Minh Chau Gold, Silver and Gemstones - No. 19 Tran Nhan Tong, Hai Ba Trung District, Hanoi

7. Chinh Quang Store - No. 30 Ha Trung, Hang Bong, Hoan Kiem District, Hanoi

8. Kim Linh 3 Store - No. 47 Ha Trung, Hang Bong, Hoan Kiem District, Hanoi

9. Huy Khoi Store - No. 19 Ha Trung, Hang Bong, Hoan Kiem District, Hanoi

10. System of transaction offices at banks such as: Sacombank, VietinBank, Vietcombank, SHB

Refer to the popular addresses for Foreign Currency Exchange - Buying and Selling USD in Ho Chi Minh City:

1. Minh Thu Currency Exchange - 22 Nguyen Thai Binh, District 1, HCMC

2. Kim Mai Gold Shop - 84 Cong Quynh, District 1, HCMC

3. Kim Chau Gold Shop - 784 Dien Bien Phu, Ward 10, District 10. Ho Chi Minh City

4. Saigon Jewelry Center - 40-42 Phan Boi Chau, District 1, HCMC

5. Kim Hung foreign currency exchange agency - No. 209 Pham Van Hai, Binh Chanh, Ho Chi Minh City

6. DOJI Jewelry Store - Diamond Plaza Le Duan, 34 Le Duan, Ben Nghe, District 1, HCMC

7. Kim Tam Hai Shop - No. 27 Truong Chinh, Tan Thoi Nhat Ward, District 12, HCMC

8. Bich Thuy Gold Shop - No. 39 Pham Van Hai Market, Ward 3, Tan Binh District, HCMC

9. Ha Tam Gold Shop - No. 2 Nguyen An Ninh, Ben Thanh Ward, District 1, HCMC

10. System of transaction offices at banks in Ho Chi Minh City such as: Sacombank, VietinBank, Vietcombank, SHB, Eximbank

Source: https://congthuong.vn/ty-gia-usd-hom-nay-2732024-usd-ngan-hang-tang-nhe-thi-truong-cho-den-ra-sao-311033.html