About AO Ctrl

Independent China-based distributor & sourcing agent for the industrial automation parts you cannot get locally — obsolete, discontinued and allocation-constrained PLCs, HMIs and VFD drives, new or used — delivered fast for machine-down and repair buyers worldwide.

Who we are

AO Ctrl is a China industrial automation supplier and independent sourcing distributor built for two jobs: urgent machine-down orders, and repair & maintenance spares you cannot get locally. As a specialized industrial automation spare parts and PLC replacement distributor, we tap into the vast industrial automation surplus and channel network to source discontinued, surplus and allocation-constrained PLC, HMI, VFD inverter, sensor and safety parts, new or used (including Siemens S7-1200/S7-300, Mitsubishi FX3U, Omron CP1E), that keep legacy lines running. Established in 2016, engineers come to us both for today's catalog numbers with real lead times, and for the lines other distributors will not quote. Send a BOM; we handle sourcing, quality control, and worldwide delivery from our Shenzhen consolidation center.

Download Aoctrl Company Introduction (Product Catalog) PDF

Independent industrial automation distributor — what that means for you

We are not a franchised distributor. We do not hold exclusive contracts with any manufacturer we list. This is not a weakness — it is the reason we can source the parts authorized distributors cannot. When Siemens marks a drive obsolete or ABB puts a contactor on allocation, the franchised channel stops quoting. Independent distribution picks up where they leave off.

• Multi-channel sourcing — we pull from authorized overstock, surplus, end-of-life specialists, and surplus programs across the global supply network. Not one supplier, not one channel — every line sourced from the network that actually has it.
• Channel transparency — where the parts came from is stated on your quotation. You decide whether that channel meets your quality program. We help you make that call honestly.
• Authenticity discipline — every lot is screened against the manufacturer datasheet. Date and lot codes are recorded where available. Suspect material is rejected, not shipped. See our Quality assurance page for the full process.
• Obsolete & discontinued automation sourcing — specialized procurement for legacy PLCs (Siemens S7-200/S7-300, Allen-Bradley SLC 500, Omron CJ1), HMIs, and vintage servo drives to prevent costly full-line overhauls.
• Machine-down emergency dispatch — 24 to 48-hour rapid dispatch for critical factory breakdown emergencies with express international air courier (DHL/FedEx) and priority customs clearance.
• Pre-shipment bench testing & video proof — every refurbished or surplus unit undergoes power-on diagnostics, I/O terminal validation, and load tests with video and photo evidence sent before shipping.
• Multi-brand industrial BOM consolidation — combine Siemens PLCs, Omron sensors, Weintek touchscreens, and ABB drives into a single door-to-door shipment (worldwide DAP express or dedicated DDP) with unified invoicing.

Who we serve

Our customers range from maintenance teams at a single factory to procurement departments managing dozens of production lines across multiple countries. Common threads:

• Industrial maintenance and MRO — keeping production lines running when the OEM says 26-week lead time
• System integrators — building panels and control cabinets with mixed-brand BOMs
• OEM spares programs — stocking discontinued controllers and drives for equipment still in the field
• Export procurement desks — consolidating multi-supplier orders into one worldwide shipment
• Verified B2B Distributors — supplementing their own catalog with hard-to-find lines

Who we do NOT serve

To maintain our high sourcing standards and fast turnaround times for genuine industrial buyers, we have strict commercial filters in place:

• Retail individuals and hobbyists (we exclusively serve verified corporate entities)
• Small single-piece retail orders (we focus on wholesale volumes and industrial project procurement)
• "Fishing" brokers (mass-broadcast RFQs without target pricing or commercial context are instantly rejected)

What we emphasize

• Hard-to-find & obsolete sourcing — when a part is discontinued, on allocation, or quoted at impossible lead times elsewhere, that is exactly what this desk is built for. We trace it through our global network and tell you honestly what is real, what the lead time is, and what a documented alternate would be.
• Authenticity discipline — we know the counterfeit patterns in this market. Lots are screened on inspection, date and lot codes recorded where available, and suspect material is rejected rather than shipped. See our Quality assurance page for the full inspection process.
• One-stop supply — one RFQ, one quote, one shipment, one invoice. You pay and provide a delivery address; we handle the rest.
• Rigorous Quality Control — every part is thoroughly inspected and verified before dispatch to ensure it meets our strict quality standards.
• Honest quoting — real lead times and ship-from per line. Lines we cannot document are declined, not guessed. NCNR lines are labeled before you confirm.

Contact & registered office

Sales email

sales@aoctrl.com

Phone

+86 159 8986 1989

Address

Suite 501, Jiali Science & Technology Building, Shenzhen, Guangdong, 518109, CN

Buying process, RFQ behaviour, and commercial terms are summarised on our Procurement page. This About page is for company identity and compliance context only.

Note on catalog content: product and category descriptions on this site are assembled programmatically from manufacturer datasheets and supplier feeds, then checked by our team. Specifications, lead times, and availability are best-effort — always confirm against the manufacturer datasheet and your RFQ before you design-in or order.

Visit us: Suite 501, Jiali Science & Technology Building, Longhua District, Shenzhen, China