Procurement
China industrial automation distributor & independent sourcing agent — new, surplus, refurbished and used. Source, QC, ship worldwide. You provide the BOM and address; we handle the rest.
Submit an RFQ with the form or by email (sales@aoctrl.com). Sign in to track quotes and replies in the buyer portal. Portal preview uses sample data—the same layout after you sign in.
Independent Automation Distributor & Sourcing Desk
Sourcing PLCs, HMIs, VFD inverters, servo packs, and sensors from Siemens, Mitsubishi Electric, Omron, Schneider, and ABB. We operate independently without brand franchise constraints, accessing regional surplus and project inventories across China.
Obsolete & Discontinued Automation Spares
Dedicated procurement for end-of-life and legacy systems (Siemens S7-200/S7-300, Allen-Bradley SLC 500, Omron CJ1/CS1). We provide factory-sealed surplus and tested functional spares to avoid costly full-line redesigns.
Machine-Down Emergency Breakdown Dispatch
Stopped production line? Tell us your machine model and the failed part number. We locate available stock within 24 hours and arrange expedited international express air delivery (DHL/FedEx) to restore factory uptime.
Pre-Shipment Bench Testing & Condition Grading
Every quote explicitly grades hardware condition (Factory New, New Surplus, Refurbished, or Clean Pull). Refurbished and used units undergo power-on bench tests, I/O verification, and load checks with photo and video proof before shipping.
What we cover
- New, surplus, refurbished and used PLCs, HMIs, servo drives, VFD inverters, sensors and safety parts from Siemens, Mitsubishi, Omron, Schneider, ABB, Delta and Weintek
- Full customs clearance (DDP available); worldwide air freight
How to buy
RFQ
Submit via the form or email; one thread per inquiry in the portal.
Quote
Price, lead, condition, MOQ. Crosses tied to your line.
Confirm
You confirm freight mode, payment terms and required docs. We lock scope and fees before spending a cent.
Ship
Consolidate every supplier into one box → QC each line vs your list → ship. Tracking + docs as quoted.
After
Same thread for issues. Returns process = quote.
RFQ & account
Guest RFQ is fine. Use the same email when you register so inquiries connect to your account. Signed-in buyers use the portal for quotes, status, and payment when offered. First response typically within one business day; complex BOMs may take longer.
Account & RFQ
Do I need an account to submit an RFQ?
No—submit from the BOM / RFQ page with your work email (no login required). To track status, request payment when enabled, and reach our team in one place, sign in with that same email—register once or use magic-link sign-in when offered. Registering keeps RFQ discussion, order progress, and payment steps together in your portal so the workflow stays digitized end to end, not only as loose email threads.How quickly will you reply?
We aim to send a first response within one business day (local business hours). Large BOMs or allocation checks may need more time — we will say so in email.Is there a minimum order, or a charge for small quantities?
No minimum — sample and single-piece orders are welcome. Small quantities are quoted per order: below MOQ the quote may carry a small handling charge, because a one-piece pick is processed the same way as a full carton. Any such charge is on the quote before you commit, never added afterwards.When and how can I pay?
After we review the RFQ. Payment options (e.g. PayPal where enabled) appear on the quote / portal when ready.Why is my RFQ not showing under My inquiries?
Same email as the form + portal sign-in. New rows can lag briefly; email us the reference if still missing.I submitted but got no email.
Check spam/promotions; safelist our domain if IT allows. No mail in ~1 business day? Email with company + RFQ ref.How do I flag an urgent or production-down request?
Note timeline/impact on the RFQ. After submit: reply to our thread or email—always include the RFQ reference.
Contact
AO Ctrl
Suite 501, Jiali Science & Technology Building, Longhua District, Shenzhen, China
Terms of sale (summary)
Non-binding overview. Your quote, order confirmation, and signed agreements control.
Last updated: April 12, 2026
Important
Binding terms are the written quotation, confirmation, invoice, and any master agreement—not this summary. If in doubt, ask counsel before you commit.
Products & scope of supply
AO Ctrl supplies industrial automation parts — PLC, HMI, drive, servo, sensor, contactor, circuit-protection and pneumatic lines — in new, surplus (excess-stock), refurbished or used condition. The condition of every line is stated on the quotation and on the product page before you commit: used lines ship as clean pulls and refurbished lines are bench-tested under load, and neither is described as new. Discontinued and allocation-constrained parts are a normal part of the range, quoted as the condition we can actually obtain rather than as an equivalent substitute.
AO Ctrl is an independent distributor and procurement agent. We are not an authorized distributor of any manufacturer named on this site, and manufacturer names are used to describe the parts themselves.
Quotes & formation of orders
Catalog listings and website content are invitations to treat. A firm order exists when we accept your purchase order or issue an order confirmation in writing (including email), consistent with the agreed quote. We may decline orders that fail compliance, credit, or supplier-imposed restrictions.
NCNR / allocation lines — when a supplier imposes non-cancellable, non-returnable terms, we pass that through and label it on the quote before you commit.
Price, currency & taxes
Prices are as quoted in the currency stated. Unless the quote explicitly includes them, VAT, sales tax, withholding, customs duties, and brokerage are typically the buyer’s responsibility at destination. Anti-dumping or trade measures that arise after quote acceptance may require re-pricing or cancellation of affected lines—we notify you promptly when we become aware.
Payment
Payment method, milestones, and credit limits are agreed per customer and stated on the quote or account terms. We may suspend shipment or decline new orders when invoices are overdue. Online payment options (for example PayPal) appear only when enabled for your quote and region.
Delivery, title & risk
Incoterms on the quote define transfer of risk, freight booking, and export/import filing responsibilities. Delivery dates are estimates unless we expressly commit to a fixed date in writing. Events outside our reasonable control (supplier delays, allocation, customs holds, carrier failures) may shift timelines; we communicate slippage when we know it.
Inspection & acceptance
You should inspect quantity, identity, and external condition on receipt. If you require electrical test or decapsulation, agree the scope, cost, and acceptance criteria before purchase—standard commercial sales may not include AQL sampling unless quoted.
Returns, cancellations & warranty
Return eligibility depends on what was quoted: standard catalog lines may allow return in original factory condition within a stated window; programmed, cut tape, NCNR, or custom orders are often final. Manufacturer warranties pass through where applicable; independent channel lines follow the warranty stated on your quote. Do not return goods without a return merchandise authorization (RMA) reference—we will not accept liability for unauthorized returns.
Traceability, authenticity & country of origin
We describe channel type and available traceability (lot codes, COO, test reports) on the quote when known. You are responsible for telling us your counterfeit-avoidance and compliance standards before we buy. If we cannot meet those standards on a line, we decline rather than ship undocumented material.
Limitation of liability
To the maximum extent permitted by applicable law, our aggregate liability arising from a given order is typically limited to the amount you paid us for that order, excluding indirect or consequential damages (including lost production, lost profits, or recall costs) unless mandatory law says otherwise. Some jurisdictions do not allow certain limitations; in those cases our liability is limited to the fullest extent still lawful. Your sole remedy for non-conforming goods is generally repair, replacement, or credit as stated on the quote or RMA decision.
Force majeure, disputes & governing terms
Neither party is liable for delay or failure caused by events beyond reasonable control (including acts of government, war, pandemic, fire, flood, or critical supplier failure), provided the affected party notifies the other without undue delay.
Governing law, venue, and arbitration — if you have a master agreement with us, it controls. Otherwise, the jurisdiction, dispute resolution, and governing law for your purchase are stated on your quote or order confirmation. If they are silent, ask us for the standard terms that apply to your entity and ship-to location before placing the order.
Changes to this section
We may update this summary to reflect how we explain our process. The “Last updated” date will change; it does not retroactively alter executed quotes or contracts.
Buying FAQ
Common questions regarding RFQs, line-matching, lead times, condition ratings, and worldwide delivery.
How do I submit an industrial automation RFQ or multi-brand BOM list?
Submit your inquiry via our RFQ form or send your part numbers and equipment lists by email. We accept bills of materials in Excel, CSV, or text format for fast line-matching.How fast does AO Ctrl respond to industrial automation quotes?
We aim to send a first response within one business day (local business hours). Large BOMs or allocation checks may need more time — we will say so in email.Where do automation parts ship from, and is worldwide DDP available?
Most parts ship directly from our Shenzhen distribution hub with door-to-door DDP (Delivered Duty Paid) shipping worldwide, including customs clearance. Your quote specifies origin and transit time per line.Can AO Ctrl act as our dedicated industrial automation buying office in China?
Yes — that is our core service. We source, negotiate, inspect, and consolidate industrial automation equipment in Shenzhen on your behalf, locking scope and fees before purchasing without requiring you to set up a China entity.Do you supply single replacement units for maintenance, or only bulk quantities?
Both. We supply single-piece emergency breakdown replacements as readily as volume project orders. There are no artificial MOQ barriers on in-stock PLCs, HMIs, and drives.How does AO Ctrl prevent counterfeit equipment and grade part conditions?
We enforce strict intake screening. Factory-new parts are verified against OEM packaging, labels, and intact security seals. Refurbished and surplus units undergo diagnostic bench testing (power-on boot, I/O validation) with test video proof provided before dispatch, backed by our 1-year functional warranty.What payment methods and currencies do you accept from overseas buyers?
We accept wire transfers (T/T in USD, EUR, or CNY) on our proforma invoice, Payoneer, and PayPal for small sample orders. You never need an Alipay or 1688 account; we handle all purchasing and export logistics in China.What are NCNR (Non-Cancellable, Non-Returnable) lines?
Upstream vendor rules. NCNR conditions on specialized or factory-ordered items are always explicitly labeled on your quotation before you commit.Where can I track RFQ statuses, orders, and commercial documents?
Submit an inquiry and track quote updates, line-item pricing, and tracking numbers directly inside the buyer portal. RFQ section.Where can I review commercial terms of sale and warranty coverage?
Our terms of sale, testing guarantees, and 12-month functional warranty details are summarized in the terms section. Terms of sale.PLC replacement parts & discontinued models (Siemens S7-1200/S7-300, Mitsubishi FX3U, Omron CP1E) — how do you source them?
We source PLC replacement parts and hard-to-find components across verified excess inventory, surplus stock, and factory pulldowns in Shenzhen and globally. Each line is classified upfront (new factory-sealed, new surplus, refurbished, or used clean pull) with condition and traceability stated before payment.Emergency machine-down orders & fast spare parts delivery — how fast can you quote and ship?
For machine-down emergencies, note "MACHINE DOWN" in your RFQ or email with part numbers and nameplate photos. We prioritize the request with a quote within one business day, dispatch promptly via DHL/FedEx Express, and offer DDP terms to ensure immediate clearance without customs delays.Multi-brand factory BOM kitting & China consolidation — how does it work?
Submit your mixed-brand BOM (Siemens, Mitsubishi, Omron, Schneider, Delta, Weintek) in Excel or CSV. We source every line across China, inspect and consolidate into a single shipment with one unified commercial invoice, eliminating multiple freight and international wire fees.Used or refurbished parts — how is condition and authenticity verified?
Refurbished parts undergo functional power-on bench testing under load with video and photo verification provided before shipment, covered by our stated per-unit warranty (typically 12 months). Used parts are inspected and shipped as pulled; we do not sell unverified material.