Direct answer: A spare-parts list and recommended-stock page cannot just say "genuine spare parts, long-term supply." It should state applicable models/serial ranges, parts categories and criticality, how recommended stock is calculated, lead time and stock status, warranty/out-of-warranty and freight, obsolescence/alternatives/last-time buy, kits and labelling, and consignment/VMI boundaries. Otherwise the customer's machine is down and discovers "no common parts stocked, a critical part takes eight weeks, and the model does not match."
This guide is for after-sales, spare-parts, procurement, warehouse, quality, finance, and website teams at manufacturers in Changzhou and nearby industrial areas. It explains how to build and accept a spare-parts list and recommended-stock page. Information is current to 2026-11-01. It is a review of public regulations, standards, and project practice, not legal, spare-parts-management, or certification advice; specific parts scope, stock, price, lead time, and warranty depend on the contract, spare-parts agreement, equipment manual, and customer requirements.
Spare parts are not "a list"; they are stock calculated by criticality, consumption, and lead time. Warranty does not mean every part is free—consumables, human damage, and freight must be stated. Obsolescence is not "we'll deal with it later"—notify early, plan last-time buy and alternatives.
How does the spare-parts page relate to after-sales, warranty, installation, and PCN pages?
The after-sales page answers how to report a fault and where the service network is; the warranty page answers term, scope, and cost; the installation page answers installation, commissioning, acceptance, and training; the PCN/EOL page answers product/material changes and discontinuation; the spare-parts page answers which parts to stock, how many, how long to arrive, warranty/paid treatment, and what happens on obsolescence. The spare-parts page is planning and supply chain, not the repair process; they link to each other but cannot replace each other.
The common break is: the customer asks "what should we stock for this machine" and sales sends the whole machine BOM; the customer buys a batch, misses critical parts and overbuys common ones; during warranty the customer expects free replacement and the supplier says "consumables excluded"; the equipment is discontinued without notice and the customer waits for an alternative. Stating categories, criticality, stock, lead time, warranty, and obsolescence on the website gives after-sales and procurement a shared basis.
| Page/entry | Answers | Audience | Cannot replace |
|---|---|---|---|
| After-sales page | Fault reporting, response, service network | Equipment users | Parts list and stock |
| Warranty page | Term, scope, cost, exclusions | Procurement, finance | Parts price and lead time |
| Installation page | Installation, commissioning, acceptance, training | Project, quality | Operating-period parts plan |
| PCN/EOL page | Changes, discontinuation, last-time buy | Customer SQE, procurement | Parts stock and alternatives |
| Spare-parts page | Categories, criticality, stock, lead time, warranty, obsolescence, kits | After-sales, procurement, warehouse | The contract/spare-parts agreement itself |
This page map is editorial; post-delivery activity requirements may refer to GB/T 19001-2016, clause 8.5.5.
What counts as a "spare part," and how should it be classified?
At least five categories: wear parts/consumables (seals, filters, belts, tooling), critical spares (motors, servos, controllers, pumps, valves), optional/retrofit kits, software/licences/dongles, and special tools/gauges. For each, state replacement interval, warranty treatment, recommended stock, lead time, and alternatives. Do not call every part in the machine BOM a spare part, and do not classify consumables as critical spares.
Classification determines "whether to stock, how many, and where." Wear parts are stocked by consumption and replacement interval; critical spares by single-point failure, downtime loss, and lead time; software/licences need version and transfer rules; special tools need calibration and loan/buy-out terms. Listing categories and criteria tells the customer what to buy, instead of "a bit of everything."
| Category | Typical content | Management focus | Common gap |
|---|---|---|---|
| Wear/consumables | Seals, filters, belts, tooling, lubricants | Interval, consumption, packaging/shelf life | Stocked as critical |
| Critical spares | Motors, servos, controllers, pumps, valves | Single point, downtime loss, lead time | Not stocked or wrong model |
| Optional/retrofit kits | Upgrade packages, options, interface boards | Compatibility, version, installation service | Hardware only |
| Software/licences | Control software, licences, dongles | Version, term, transfer/backup | Licence lost |
| Tools/gauges | Special wrenches, calibration parts, test fixtures | Calibration, loan/buy-out, return | Not calibrated |
This classification is editorial; specific parts scope and warranty treatment follow the equipment manual, contract, and customer requirements.
How should criticality be classified and recommended stock calculated?
Classify by "failure impact × downtime loss × lead time × availability of alternatives": A (safety/regulatory/single point/long lead), B (affects capacity but short lead/alternative), C (wear/consumable). Recommended stock can be estimated as "historical/expected consumption × procurement lead time + safety stock," adjusted by criticality; without history, start from machine count, operating hours, and supplier recommendation, and review periodically.
Recommended stock is not "more is safer"; it is "downtime risk vs capital tied up." An A-class critical part may justify one unit or consignment even if expensive; C-class consumables are stocked by consumption; B-class may rely on fast replenishment or alternatives. The page provides the calculation basis and classification rules so the customer can adjust to machine count/shifts/downtime cost instead of copying a fixed number.
| Class | Criteria | Stock policy | Common gap |
|---|---|---|---|
| A critical | Safety/regulatory, single point, long lead, no alternative | One unit/consignment/safety stock | Buy only after failure |
| B important | Affects capacity, short lead/alternative | Small stock/fast replenishment | Overstocked |
| C wear | Consumable, short lead | By consumption/interval | Stockout |
| Calculation | Consumption × lead time + safety stock | Adjust by machines/shifts | Guesswork |
| Review | Consumption/downtime/lead-time changes | Quarterly/annual | Set once forever |
These classes and stock rules are editorial; specific quantities, amounts, and consignment follow the equipment, customer, and contract—no universal numbers are set here.
What fields should the spare-parts list contain?
At minimum: applicable model/serial range, part number/name/revision, quantity/unit, criticality, stock status, lead time, MOQ, unit price/currency, warranty treatment, supersession/upgrade relationship, weight/dimensions/packaging, HS code for export, and installation location/diagram. The list should filter by model so the customer does not order the wrong part; old/alternative parts should state "usable/not usable/requires modification."
The list is not an Excel screenshot; it is data the customer can use to decide: does this part fit my serial number, is it in stock, how long, how much, is it under warranty, is there an alternative. Missing fields force repeated questions; too many unstructured fields confuse. Provide a filterable table plus download, with version/date.
| Field | What to state | Evidence | Common gap |
|---|---|---|---|
| Applicable model | Model, serial range, version | Equipment register | One list for all models |
| Part number/name | Unique number, name, revision/supersession | BOM/manual | Duplicate names |
| Quantity/unit | Piece/set/metre/kg, packaging | Packaging spec | Unit unclear |
| Stock/lead time | In stock/backorder/lead time, MOQ | Inventory system | Only "available" |
| Price/currency | Unit price, currency, validity, freight | Quotation | Expired price |
| Warranty/alternative | Warranty treatment, alternative/upgrade | Warranty/change record | Alternative unusable |
| Export fields | Weight/dimensions, HS code, origin | Customs documents | HS missing |
These list fields are editorial; specific fields, format, and price disclosure follow the customer, contract, and company policy.
How should in-warranty, out-of-warranty, and freight be separated?
State the warranty scope: replacement due to material/manufacturing defects is usually covered; consumables, wear parts, human damage, misoperation, failure to follow maintenance, and unauthorised modification are usually excluded; state whether in-warranty freight, on-site labour, and return of old parts are included. Out-of-warranty should state price, lead time, payment, and the warranty on the replacement. Do not write "warranty" as "all spare parts free forever."
The biggest spare-parts dispute is "is this part covered": seals/filters are consumables, a burnt motor may be overload/heat/voltage, a controller may be human ESD. State the "covered/not covered/requires inspection" rules on the page, use the inspection report as evidence, and the customer can anticipate cost instead of arguing on site.
| Case | Typical handling | Evidence | Common gap |
|---|---|---|---|
| Material/manufacturing defect | Warranty replacement/repair | Inspection report | Not acknowledged |
| Consumable/wear | Paid replacement | Manual/interval | Treated as warranty |
| Human/misoperation | Paid repair | Site record | Responsibility unclear |
| Maintenance not followed | May be excluded | Maintenance records | No records |
| Freight/labour | Per contract/region | Quote/terms | Assumed free |
| Old-part return | Required/not required | Return note | Lost |
These warranty rules are editorial; specific scope, cost, and freight follow the warranty terms, contract, and inspection conclusion.
How should lead time, stock status, and emergency orders be described?
Stock status at least: in stock, in transit, backorder/to be produced, discontinued/alternative; lead time should state working/natural days, start point, and whether transport/customs are included; emergency options (air/express/dedicated/loaner) should state cost and "no time guarantee." Do not write only "fast shipping," and do not treat "in stock" as "in stock forever." The customer chooses wait or expedite based on downtime cost.
Spare-parts lead time depends on suppliers, batches, cross-border transit, and customs; do not overpromise. The page can offer three tiers—standard/expedited/alternative—and note "subject to stock and scheduling at order confirmation." Emergency terms should state who pays freight, prepayment, and loaner fees/return. Specific days are project/stock-specific; this article promises none.
| Status | What to state | Evidence | Common gap |
|---|---|---|---|
| In stock | Location, available quantity, cut-off time | Inventory system | False stock |
| In transit | ETA, allocatable quantity | Logistics/procurement | Sold as in stock |
| Backorder/production | Lead time, MOQ, start point | Supplier confirmation | Only "ASAP" |
| Discontinued/alternative | Last-time buy, alternative, modification | PCN/EOL | No notice |
| Emergency | Air/express/dedicated/loaner, cost, time | Quote/confirmation | Promise 24h |
| Customs | HS code, origin, duty, timing | Customs documents | Omitted |
These lead-time and stock descriptions are editorial; specific days, costs, and availability follow order confirmation, stock, and logistics.
How should obsolescence, alternatives, and last-time buy be handled?
State the obsolescence notification mechanism: how far in advance, last-time-buy window, stock/service life after last buy, alternative/modification path, and whether software/licences continue. Link discontinued parts to the PCN/EOL page—do not rely on verbal sales notice. Equipment life may be ten years; if parts supply ends in five, plan ahead.
Obsolescence is not "sell out and done": a critical part discontinuation can stop the whole machine; the customer needs last-time buy, bridge stock, alternative validation, or machine retrofit. State the four steps—notify, last-time buy, alternative, retrofit—and note that "alternative parts require compatibility/safety/certification validation," not a "compatible" label.
| Stage | What to state | Evidence | Common gap |
|---|---|---|---|
| Notice | Lead time, affected models, last order date | PCN/EOL | Last-minute notice |
| Last-time buy | LTB quantity, price, lead time, payment | Order | No window |
| Bridge stock | Service life, location, allocation | Stock plan | No stock |
| Alternative | Model, compatibility, validation/certification | Test report | Only "compatible" |
| Retrofit | Machine/module retrofit, cost | Plan | No path |
Obsolescence management is editorial; specific notice periods, last-time buy, and service life follow the contract, PCN/EOL policy, and customer requirements.
How should kits, labelling, and consignment/VMI be accepted?
A kit should state list, quantity, diagram, applicable model/serial, torque/consumables/tools, so the customer does not "buy a kit and miss one item." Labels should resist oil/temperature and match the part number; packaging should be rust/moisture/ESD protected. Consignment/VMI should state ownership (who owns before consumption), replenishment trigger, counting, slow-moving/expiry, damage/loss, and exit; do not present consignment as "free stock."
Kits and consignment are the last mile: the customer buys a kit and misses an O-ring; consignment stock sits in the customer's warehouse with unclear ownership/counting/expiry; VMI triggers are unclear, causing stockouts or excess. State these boundaries on the page and detail them in the contract annex so after-sales and finance can reconcile.
| Item | What to state | Evidence | Common gap |
|---|---|---|---|
| Kit list | Part numbers, quantities, diagram, applicable model | Packing list | Missing item |
| Labels/packaging | Oil/temperature resistance, rust/moisture/ESD | Label/packaging | Label falls off |
| Consignment ownership | Owner before consumption, insurance, damage | Consignment agreement | Ownership unclear |
| Replenishment | Min/max stock, counting cycle | VMI rules | Stockout/excess |
| Slow-moving/expiry | Responsibility, discount, return | Count record | Long occupation |
| Exit | Termination, buy-back, transfer | Agreement | No exit |
These kit and consignment arrangements are editorial; specific ownership, replenishment, counting, and exit follow the consignment/VMI agreement and contract.
What should the page say, and how should it link?
Include applicable models/serials, parts categories, criticality, recommended-stock basis, list fields, stock/lead time, warranty treatment, obsolescence/alternatives/last-time buy, kits/labelling, consignment/VMI, and a contact; link to the after-sales page, warranty page, installation page, and PCN/EOL page. The public page states rules and public lists, not customer prices, proprietary BOMs, or undisclosed drawings.
Make it a "spare parts and recommended stock" page, not a "spare-parts store": first let the customer search by model/serial; then show criticality, stock, and lead time; then warranty/obsolescence/kits/consignment; finally a parts contact. Sales can screen demand, after-sales can align stock, and customer procurement can budget against the list.
| Module | What to write | Evidence/asset | Common gap |
|---|---|---|---|
| Applicable models | Model/serial range/version | Equipment register | One list for all |
| Category/criticality | Wear/critical/kit/software/tool; A/B/C | List | BOM only |
| Stock/lead time | In stock/in transit/backorder/discontinued; start point | Inventory system | Only "available" |
| Warranty/price | In/out of warranty, freight, labour, old part | Warranty/quote | All free |
| Obsolescence/alternative | Notice, LTB, alternative, retrofit | PCN/EOL | No notice |
| Kits/consignment | List, labels, ownership, replenishment, exit | Agreement | Boundary unclear |
| Links/contact | After-sales/warranty/installation/PCN; parts owner | Page test | Broken links |
These modules are editorial; public scope, customer prices, and BOMs follow confidentiality requirements and the contract.
Go-live acceptance checklist
Ten checks: applicable models, parts categories, criticality, recommended stock, list fields, stock/lead time, warranty, obsolescence/alternatives, kits/consignment, and links/owner. Each needs an owner, evidence, and review date. The pass condition is not "the page has a parts list"; it is that the customer knows what to stock, how many, how long, whether warranty covers it, and what happens on obsolescence.
After-sales, spare-parts, procurement, warehouse, quality, finance, and the website vendor can share this list. Before go-live, run one real machine through the flow: model/serial → parts list → criticality/recommended stock → stock/lead time → warranty/price → obsolescence/alternative → order/shipment. Any step that fails is a step the page has not yet explained.
| Check | Pass condition | Evidence | If it fails |
|---|---|---|---|
| Applicable models | Model/serial/version filterable | Equipment register | Add scope |
| Categories | Wear/critical/kit/software/tool clear | List | Add categories |
| Criticality | A/B/C criteria, downtime/lead time/alternatives | Class table | Add classes |
| Recommended stock | Basis, parameters, review mechanism | Calculation | Add basis |
| List fields | Part number/quantity/unit/price/lead time/alternative | List | Add fields |
| Stock/lead time | In stock/in transit/backorder/discontinued, start point | Inventory | Add status |
| Warranty/price | In/out, freight, labour, old part | Warranty/quote | Add terms |
| Obsolescence | Notice, LTB, alternative, retrofit | PCN/EOL | Add mechanism |
| Kits/consignment | List, labels, ownership, replenishment, exit | Agreement | Add agreement |
| Links/owner | After-sales/warranty/installation/PCN reachable; owner named | Page test | Fix links |
This checklist is editorial; specific parts, stock, price, warranty, and obsolescence follow the contract, equipment manual, and customer requirements.
Who should read this, who should not, and what decisions does it support?
It suits manufacturers in Changzhou and nearby areas selling equipment, lines, molds, or engineering projects—especially where customers have many machines, high downtime loss, long critical-part lead times, or need consignment/VMI. It does not suit standard-parts sellers whose customers do not stock spares, or single-use equipment teams.
Read it if you are in after-sales, spare parts, procurement, warehouse, quality, finance, or a website vendor; you are building a parts page, recommended stock, criticality classes, obsolescence/alternatives, consignment/VMI, or a customer parts budget; or you need to decide what to stock, how many, how long, whether warranty covers it, and what happens on obsolescence. Skip it if you treat the machine BOM as a spare-parts list; you replace stock/lead time with "long-term supply"; or you want one page to replace the equipment manual, contract, or legal advice. It supports self-review of models, categories, criticality, recommended stock, list fields, lead time, warranty, obsolescence, and consignment.
Lingyi Information is a website development and enterprise AI project provider, not a spare-parts supplier, equipment manufacturer, law firm, or certification body. This article is not a substitute for spare-parts management, legal, or certification advice. Changzhou projects are delivered remotely or on site as confirmed per project; Lingyi is one candidate, does not claim a local office or team, and does not promise stock, lead times, prices, customer conversion, or inquiries.
FAQ
How should recommended stock be set?
Estimate as "expected consumption × procurement lead time + safety stock," then adjust by criticality: A-class critical parts (safety/regulatory/single point/long lead) may justify one unit or consignment; C-class consumables by consumption/interval; B-class small stock or fast replenishment. Without history, start from machine count, operating hours, and supplier recommendation, and review quarterly. Specific quantities/amounts follow the equipment, customer, and contract.
Are spare parts free during warranty?
Not necessarily. Replacement due to material/manufacturing defects is usually covered; consumables, wear parts, human damage, misoperation, failure to follow maintenance, and unauthorised modification may be excluded; freight, labour, and old-part return depend on the terms. State "covered/not covered/requires inspection" rules on the page, supported by the inspection report—not a blanket "all free during warranty."
What happens when a part is discontinued?
Look at the PCN/EOL notice and spare-parts agreement: advance notice, last-time-buy window, bridge stock, alternative/modification path. Critical-part discontinuation should be planned early; alternatives require compatibility, safety, and certification validation—not just a "compatible" label. Specific notice periods and service life follow the contract.
What if the part number does not match the machine?
Check by machine model + serial number + version against the applicable list, then verify the part number/supersession; do not rely on the name or a photo. The page should filter by serial number and distinguish "old part/alternative/requires modification." If it still does not match, ask the customer for the nameplate/serial photo and have after-sales confirm—do not ship on experience.
How fast can an emergency order be?
Depends on stock, supplier, transport, and customs; no blanket promise. The page can list "in stock/in transit/backorder/emergency (air/express/dedicated/loaner)" with available methods and costs, and note "subject to stock and scheduling at order confirmation." State freight, prepayment, and loaner return; specific timing follows the project.
Why are spare parts more expensive than machine BOM parts?
Spare parts carry small-batch procurement, packaging, inventory, warehousing, obsolescence/slow-moving, customs, and after-sales support costs—not the machine BOM unit price. The page can explain the pricing logic (genuine/small batch/expedite/service), but should not treat "expensive" as self-evident; customers compare alternatives/repair options, and transparency helps acceptance.
One-sentence takeaway
A Changzhou manufacturer's spare-parts list and recommended-stock page should not say "genuine spare parts available." It should turn applicable models, categories and criticality, recommended-stock basis, list fields, stock/lead time, warranty treatment, obsolescence/alternatives, and kits/consignment into a verifiable checklist—so the customer knows what to stock, how many, how long, and whether warranty covers it.
Method and limitations
This is a review of public regulations, standards, and project practice, not a compliance certification or legal opinion on any company, equipment, spare part, stock, price, lead time, or warranty. No undisclosed customer spare-parts prices, BOMs, inventory, or downtime data were used. Categories, criticality, stock basis, list fields, and the acceptance checklist are editorial suggestions, not spare-parts-management, legal, or certification conclusions. Specific parts scope, stock, price, lead time, warranty, and obsolescence arrangements depend on the equipment manual, contract/spare-parts agreement, customer requirements, and applicable law.
Sources and scope
Information is current to 2026-11-01. The following are public official/primary pages; their scope, version, and wording control.
- Civil Code of the PRC, Articles 615, 617, and 621: Cyberspace Administration of China. Delivery according to agreed quality, liability for nonconforming quality, and inspection period/notice duty.
- GB/T 19001-2016, Quality management systems—Requirements, clause 8.5.5 (post-delivery activities): National Standards Full-Text Public System. The organisation should meet post-delivery requirements, considering legal/regulatory requirements, potential undesired consequences, product nature/use/life, customer requirements, and feedback.
- Product Quality Law of the PRC (2018 amendment), Article 26: State Administration for Market Regulation. Producers are responsible for product quality; products must meet safety, performance, and stated standards/descriptions.
Spare parts and obsolescence after retrofit; see the equipment retrofit / refurbishment page acceptance checklist.