13
Precision Rolling Lines
Rolling, slitting and dimensional control
Factory Capability · Audit Pre-Review Center
Industrial manufacturing capability for precision conductor materials
This page supports pre-audit review by overseas customers: factory overview, process map, lines and equipment, product-form and dimensional capability, testing capability, batch traceability, packaging and export, and the route from sample to mass production. Unverified equipment parameters are not published here.
Founded
2012
Precision rolling lines
13 precision rolling lines
Annual capacity
15,000 tons/year capacity
Quality system
ISO 9001:2015
Location
Zhuji, Zhejiang, China
MOQ
MOQ from 200 kg
Data source: src/data/companyFacts.ts (company facts single source; items awaiting original-document verification are listed in docs/audit/human-approval-required.md).
Manufacturing Process Map
Common process route for clad conductors and precision rolled materials. Parameters at each stage are recorded per the control plan as IPQC process evidence.
- 1
Cladding / bonding
Bond copper, aluminum, steel or nickel layers into a single composite conductor.
Controls: Cladding pressure, diffusion temperature and time window; layer ratio from incoming material control.
- 2
Precision rolling
Roll the bonded composite to target thickness and width with controlled crown and edge quality.
Controls: Roll gap and pass schedule per control plan; inline dimensional trends.
- 3
Drawing
Draw conductors to final diameter for round-wire product forms.
Controls: Die sequence, lubrication and surface condition; interface integrity after drawing.
- 4
Annealing
Restore ductility and meet target mechanical properties.
Controls: Temperature and time window per control plan; hardness and elongation checks.
- 5
Slitting and winding
Slit and wind strip, foil and ribbon to ordered width and spool format.
Controls: Width, camber and edge quality; tension and traverse winding settings.
- 6
Surface treatment / plating
Apply tin, lead-free or project-specific coatings for solderability and corrosion protection.
Controls: Coating system and thickness per specification; solderability checks.
- 7
Inspection and testing
Verify dimensions, electrical properties and bond quality before release.
Controls: IQC / IPQC / FQC stages; COA/COC issued per lot.
- 8
Packaging
Pack coils, spools and cut lengths for shipment with lot labels and export documentation.
Controls: Packaging, label and lot consistency aligned with the purchase specification.
Data source: process and control content already published on /technology/clad-weld/ and /technology/quality-control/.
Equipment and Production-Line Matrix
Publishing rule: only equipment verified against internal manufacturing records is shown; ranges and tolerances must come from an approved capability table. Unverified items are not published — they are checked on site during the audit or provided under NDA.
| Process / equipment | Quantity | Supported products | Range / tolerance |
|---|---|---|---|
| Precision rolling Precision rolling line | 13 | Composite PV Ribbon · Copper Clad Aluminum (CCA) · Copper Clad Steel (CCS) · Nickel Clad Copper (NCC) · Copper Strip · Aluminum Strip | Provided from an approved capability table (pending internal verification) |
| Cladding / bonding The equipment list, nameplates, quantities, size ranges and tolerances for this process are not published on the website. They are verified during the factory audit or provided under NDA. | — | — | — |
| Drawing The equipment list, nameplates, quantities, size ranges and tolerances for this process are not published on the website. They are verified during the factory audit or provided under NDA. | — | — | — |
| Annealing The equipment list, nameplates, quantities, size ranges and tolerances for this process are not published on the website. They are verified during the factory audit or provided under NDA. | — | — | — |
| Slitting and winding The equipment list, nameplates, quantities, size ranges and tolerances for this process are not published on the website. They are verified during the factory audit or provided under NDA. | — | — | — |
| Surface treatment / plating The equipment list, nameplates, quantities, size ranges and tolerances for this process are not published on the website. They are verified during the factory audit or provided under NDA. | — | — | — |
| Inspection and testing The equipment list, nameplates, quantities, size ranges and tolerances for this process are not published on the website. They are verified during the factory audit or provided under NDA. | — | — | — |
| Packaging The equipment list, nameplates, quantities, size ranges and tolerances for this process are not published on the website. They are verified during the factory audit or provided under NDA. | — | — | — |
Data source: src/data/factory-capabilities.ts (approvedForPublicUse filter); line count from companyFacts. Capacity basis: annual capacity is reconciled from line count, equipment cycle time and shift pattern, and cross-checked against production scheduling records during the audit (see the audit checklist guide).
Product-Form Capability
Composite PV ribbon
Interconnect, busbar, BC, SMBB/0BB, low-temperature, RAYLITE composite
Copper clad aluminum (CCA)
Round wire, flat wire, strip, foil
Copper clad steel (CCS)
Round wire, stranded wire
Nickel clad copper (NCC)
Wire, strip, foil
Precision rolled materials
Copper strip, copper foil, aluminum strip, aluminum foil, nickel strip
Data source: companyFacts.coreProducts / supportingProducts and the Products section.
Dimensional Capability
Dimensional control covers the characteristics below. Typical ranges per product family are published on the corresponding specification pages and the technical claim registry; project tolerances are confirmed per drawing and purchase specification, not as fixed figures on this page.
| Controlled characteristic | Method | Buyer evidence |
|---|---|---|
| Diameter (round wire) | Measured per product specification and control plan | FQC dimensional report / COA |
| Width and thickness (strip, foil, ribbon) | Measured per product specification and control plan | FQC dimensional report / COA |
| Camber and straightness | Measured per product specification and control plan | FQC dimensional report / COA |
| Edge quality and surface condition | Visual and per-specification inspection | Process and final inspection records |
Data source: IQC/IPQC/FQC matrix on /technology/quality-control/; typical family ranges on product pages and the technical claim registry.
Testing Capability
Test items and reference methods are listed below. The testing equipment inventory is provided under NDA; sample reports are released after commercial and confidentiality review.
Metallographic cross-section
CCA, CCS, NCC clad conductors
ASTM B748 / ISO 1463
EDS line scan
CCA, CCS, NCC clad conductors
ISO 22309
Layer thickness distribution
CCA, CCS, NCC wire and strip
ASTM B748 / ISO 1463
Peel / shear test
CCA, CCS, NCC clad conductors
Per product specification
Bending test
CCA, CCS, NCC wire and strip
ISO 7801 (where applicable)
Thermal cycling
CCA, CCS, NCC clad conductors
IEC 60068-2-14
Electrical resistivity
CCA, CCS, NCC clad conductors
ASTM B193
Data source: evidence modules already published on /technology/quality-control/ (methods, sampling frequency and reference standards).
Batch Traceability
IQC incoming control
Material grade, composition, supplier lot and incoming dimensions; nonconformance isolation and traceability.
IPQC process control
Rolling, cladding, annealing, drawing and slitting parameter records; inline dimensional, surface and electrical trends.
FQC final release
COA/COC issued per lot; dimensions, tolerance, conductivity, bond quality and surface consistency.
Lot labels and shipment documentation
Packaging, label and lot consistency; shipment documents aligned with the purchase specification.
Data source: IQC/IPQC/FQC buyer-evidence lists on /technology/quality-control/ and /technology/clad-weld/.
Packaging and Export
Supply formats
- Spool
- Traverse wound spool
- Cut-to-length
- Coil
Spool specifications, packaging protection and label formats are confirmed per the purchase specification.
Shipment documentation
- COA / COC issued per lot
- RoHS / REACH documents prepared per product family and shipment region
- Lot labels and shipment documents aligned with the purchase specification
Data source: product specification pages (supply formats) and compliance documentation notes on /resources/downloads/.
Sample / Pilot / Mass-Production Route
-
1. Specification confirmation
Product form, material system, dimensions, tolerances, target conductivity or strength, application environment and annual volume.
-
2. Samples
Typical sample lead time: 3-7 days after specification confirmation
-
3. Pilot run
Executed per the project validation plan: dimensions, electrical properties, bond quality and customer-specified tests.
-
4. Mass production
MOQ 200 kg; Typical production lead time: 7-14 days, depending on specification and order volume
Data source: companyFacts (MOQ, sample and production lead times are plan-baseline facts).
Factory Audit Download Pack
Public materials available before an on-site audit. Certificate originals, equipment capability tables and sample test reports are provided on request or under NDA.
-
PV Ribbon Factory Audit Checklist (13 Production Lines)
Line count, capacity and calibration checks an auditor should perform on site.
-
Clad conductor standards table (CSV)
Standard applicability by product family and form.
-
CCA conductivity table (CSV)
Conductivity by copper ratio for CCA review.
-
PV ribbon size table (CSV)
Ribbon geometry ranges used during specification confirmation.
-
ISO / RoHS / REACH document request
Latest compliance documents matched to product family and shipment region.
Data source: src/data/download-assets.ts registry and the /resources/downloads/ download center.
What to send for capability review
Send product form, material system, dimensions, tolerances, target conductivity or strength, application environment, annual demand and any drawing or standard requirement.
Request capability review