Contact and quotation
Tell us what the machine is doing — we'll tell you what's possible
For a first assessment you do not need drawings or source code. The controller model, the machine type, and the symptom are usually enough to decide what can be done remotely.
Send a message
Direct contact
- Phone / WhatsApp: +86 133 1955 1131
- Landline: +86 731 8880 8448
- Email:
- Address: Room 10020, Tiandu Building, Kaifu District, Changsha, Hunan, China
- Working hours: Beijing time (UTC+8). We respond remotely first; messages are answered in order of arrival.
What to send in your first message
- The controller model (PLC / HMI / drive), and whether it still powers up.
- The machine type and what it does.
- What changed: a fault, a lost program, a dead laptop, a discontinued vendor, or a plan to migrate.
- Whether you are the equipment owner (we work for owners, with written authorization).
If the controller can be reached remotely, we will say so before any commitment. If an on-site visit is required, we will say that too — and quote it separately.
General AI services (sister company)
For content, customer-service bots, automation, websites and AI training — delivered independently by Shanghai Erhu Information Technology Co., Ltd. — see /ai/.