Ngoài ra, Công ty Hoàng Quân cung cấp dịch vụ bảo hành, bảo trì, nâng cấp, sửa chữa máy đếm tiền chuyên nghiệp, uy tín với đội ngũ kỹ thuật nhiều năm kinh nghiệm, đa dạng thương hiệu MASU, Xiudun, Xinda, Oudis, Modul, Silicon, Balion, Manic,...Nhanh Chóng - Kịp Thời - Tận Tình - Chuyên Nghiệp. Hoàng Quân nhận sửa máy đếm tiền các lỗi phổ biến cho tiền vào máy không chạy, đứt dây curoa, máy đếm tiền nhảy số đếm, đếm sai thiếu hoặc thừa tiền, máy báo không có điện, máy đếm hay kêu to, hay dừng, báo nhầm sang loại tiền khác, độ nhận tiền giả kém
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