Freight & Customs Clearance SOP — CN → PE Corridor (LFP Vertical)

Standard Operating Procedure for shipping CATL 280 Ah LFP cells, Highstar 51.2 V module racks, BMS PCBAs (BMS-Master/Slave), Sungrow ST250KTL-30 PCS, Huawei SmartLogger 3000A and LONGi Hi-MO 5m BoS components — plus OEM spare parts — from CN to PE.

Verdict: 12-step SOP, ~35 days door-to-door (sea, indicative), applies to CATL 280 Ah LFP cells / Sungrow ST250KTL-30 PCS / Huawei SmartLogger 3000A / LONGi Hi-MO 5m on the CN → PE corridor; evidence dated 2026-09-22; PE 10-digit NANDINA mapping for 8537.10 / 8536.90 and ad valorem duty are model assumptions and must be re-verified against SUNAT at filing.

Item	Decision / value
Equipment family covered	LFP cell (CATL 280 Ah) → module rack (Highstar 51.2 V 100 Ah) → BMS PCBA (BMS-Master / BMS-Slave, 16S) → PCS (Sungrow ST250KTL-30) → BoS (Huawei SmartLogger 3000A, LONGi Hi-MO 5m connectors)
Corridor	CN ports (Shanghai / Ningbo / Shenzhen) → PE Callao (sea) / PE LIM (air)
Horizon	~35 calendar days door-to-door (sea, indicative)
Evidence date	2026-09-22 (WCO HS 2022; UN Manual of Tests and Criteria Rev. 7, 2023; SUNAT portal)
Hard limits governed	UN 38.3.8 SOC ≤ 30 %; Sungrow PCS torque per Service Manual UM-ST250-30 Rev. 2.1 §4.3; BMS transport voltage window per OEM manual Rev. 1.4
Limitation / model assumption	PE 10-digit NANDINA mapping for 8537.10 / 8536.90 and ad valorem duty rates are UNVERIFIED — must be looked up in SUNAT Consulta de Tributos at filing

1. Scope and Applicability

This SOP applies to shipments where Tradvolt is seller, shipper or appointed freight coordinator for the following OEM equipment families, when consigned to PE:

LFP cells: CATL 280 Ah LFP prismatic cell (3.2 V nominal, 280 Ah, 896 Wh), UN 38.3.8 SOC ≤ 30 % at handover. [Model assumption | OEM landing: https://www.catl.com/en/ess/ — model page is JS-rendered; spec confirmed at RFQ | accessed 2026-09-22]
Module / rack: Highstar 51.2 V 100 Ah LFP server-rack battery (5.12 kWh per module, 16S1P), stacked to ≤ 10 modules per cabinet per OEM manual Rev. 1.4. [Model assumption | OEM manual: Highstar 51.2 V 100 Ah LFP Battery Pack User Manual Rev. 1.4, §3.2 stacking limit]
BMS PCBA: BMS-Master / BMS-Slave PCBAs (CAN-bus, 16S topology) shipped as replacement spares under HS 8537.10. [Model assumption | referenced from Highstar BMS datasheet, §4.2]
PCS / inverter: Sungrow ST250KTL-30 string inverter (250 kW, 1500 V DC max). Torque limits per Service Manual UM-ST250-30 Rev. 2.1, §4.3 (DC-connector 6 N·m; PE-bar 10 N·m). [Model assumption | OEM landing: https://www.sungrowpower.com/en — Service Manual UM-ST250-30 Rev. 2.1 §4.3 — model page is JS-rendered; spec confirmed at RFQ | accessed 2026-09-22]
BoS — communication: Huawei SmartLogger 3000A data logger (RS485 / Ethernet / 4G). [Model assumption | OEM landing: https://solar.huawei.com/en — model page is JS-rendered; spec confirmed at RFQ | accessed 2026-09-22]
BoS — PV module: LONGi Hi-MO 5m 540–555 W mono-crystalline modules (when shipped together with the BESS BoS). [Model assumption | OEM landing: https://www.longi.com/en/ — model page is JS-rendered; spec confirmed at RFQ | accessed 2026-09-22]
OEM spare parts: DC connectors, busbars, harnesses (HS 8536.90).

It does not cover end-consumer lithium cells shipped under IMDG Class 9 dangerous-goods declarations; those require the dedicated Tradvolt lithium-cell SOP. [Claim | Src: IATA Dangerous Goods Regulations programme page | URL: https://www.iata.org/en/programs/cargo/dgr/ | accessed 2026-09-22]

2. Definitions

UN 38.3.8 — Sub-section 38.3.8 of the UN Manual of Tests and Criteria (UN Rev. 7, 2023): "Required packaging" and "SOC ≤ 30 %" provisions for lithium cells shipped by air or sea. [Claim | Src: UNECE — Manual of Tests and Criteria, Rev. 7 (2023), Section 38.3.8, paragraph 38.3.8.1 | URL: https://unece.org/transport/dangerous-goods/manuals/un-manual-tests-and-criteria | accessed 2026-09-22]
MSDS Rev. 2 — Material Safety Data Sheet, Revision 2, issued by CATL for the LFP 280 Ah cell (GHS-aligned, §9 physical/chemical properties). [Model assumption | OEM document: CATL LFP 280 Ah MSDS Rev. 2, §9]
AQL 1.0, G-II — Acceptance Quality Limit of 1.0 at General Inspection Level II, per ISO 2859-1:1999. [Claim | Src: ISO 2859-1:1999 — Sampling procedures for inspection by attributes, Part 1 | URL: https://www.iso.org/standard/1140.html | accessed 2026-09-22]
HS code — 6-digit subheading of the Harmonized Commodity Description and Coding System maintained by the WCO. [Claim | Src: WCO — Harmonized System Nomenclature 2022 Edition | URL: https://www.wcoomd.org/en/topics/nomenclature/instrument-and-tools/hs-nomenclature-2022-edition.aspx | accessed 2026-09-22]
Incoterms® 2020 — ICC pre-defined international commercial terms (e.g., FOB Shanghai, CIF Callao, DAP Lima warehouse), ICC publication No. 723E, effective 2020-01-01. [Claim | Src: ICC Incoterms 2020 (official rules page) | URL: https://iccwbo.org/business-solutions/incoterms-rules/incoterms-2020/ | accessed 2026-09-22]
FIATA — International Federation of Freight Forwarders Associations, issuer of FBL / FWR multimodal documents. [Claim | Src: FIATA | URL: https://fiata.org/ | accessed 2026-09-22]
DUA — Declaración Única de Aduanas, the Peruvian single customs declaration filed with SUNAT. [Claim | Src: SUNAT — Operaciones Aduaneras | URL: https://www.sunat.gob.pe/operaciones-aduaneras/ | accessed 2026-09-22]

3. Step-by-Step Procedure

Step #	Action	Owner	Input doc / data	Output doc	Done-when
1	Identify model & OEM-manual revision. For PCS work note torque values from the service manual.	Tradvolt Trade Compliance + QA	OEM datasheet, OEM service manual	Equipment register line	Each line item records model + manual revision (e.g., Sungrow ST250KTL-30 / UM-ST250-30 Rev. 2.1 §4.3). [Model assumption \| OEM landing: https://www.sungrowpower.com/en — Service Manual UM-ST250-30 Rev. 2.1 §4.3; spec confirmed at RFQ]
2	Classify each line under WCO HS Nomenclature 2022 to assign the 6-digit subheading (e.g., 8507.60 / 8504.40 / 8537.10 / 8536.90).	Tradvolt Trade Compliance	Equipment datasheet, OEM part list	HS-code assignment sheet	Each SKU is mapped to a 6-digit HS code and recorded in the ERP. [Src: WCO HS Nomenclature 2022 Edition \| URL: https://www.wcoomd.org/en/topics/nomenclature/instrument-and-tools/hs-nomenclature-2022-edition.aspx \| accessed 2026-09-22]
3	Confirm the ICC Incoterms® 2020 rule (typically FOB Shanghai/Ningbo/Shenzhen or CIF Callao) with the buyer.	Tradvolt Sales + Buyer	Sales contract	Incoterms clause in PI / Sales Contract	Both parties initial the Incoterms clause on the Pro-forma Invoice. [Src: ICC Incoterms 2020 (official rules page) \| URL: https://iccwbo.org/business-solutions/incoterms-rules/incoterms-2020/ \| accessed 2026-09-22]
4	Book freight with a FIATA-member forwarder (sea FCL/LCL or air) and confirm route, vessel, ETD/ETA.	Tradvolt Logistics	Booking request, packing-list draft	Booking confirmation, ETD/ETA	Forwarder issues a booking confirmation with vessel name, voyage, and container number (if FCL). [Src: FIATA \| URL: https://fiata.org/ \| accessed 2026-09-22]
5	Prepare CN export documents: commercial invoice, packing list, PRC export customs declaration.	Tradvolt Export Desk	Sales contract, packing list	Commercial invoice, packing list, export declaration	PRC customs releases the cargo and the export declaration is closed. [Src: GACC — General Administration of Customs of the PRC (English portal) \| URL: http://english.customs.gov.cn/ \| accessed 2026-09-22]
6	For any LFP cells (CATL 280 Ah) verify UN 38.3.8 SOC ≤ 30 % and attach the test summary + CATL MSDS Rev. 2.	Tradvolt QA + OEM	UN 38.3.8 test report, CATL MSDS Rev. 2	UN 38.3.8 summary PDF + MSDS PDF	UN 38.3.8 summary and MSDS Rev. 2 are attached to the shipping file, with SOC recorded. [Src: UNECE — Manual of Tests and Criteria, Rev. 7 (2023), §38.3.8 \| URL: https://unece.org/transport/dangerous-goods/manuals/un-manual-tests-and-criteria \| accessed 2026-09-22]
7	Conduct PSI per ISO 2859-1:1999 at AQL 1.0, General Inspection Level II, when mandated by contract or PE import controls; otherwise archive a written exemption memo.	Tradvolt QA	Inspection checklist, AQL plan	PSI report or exemption memo	PSI certificate is filed or a written exemption is archived. [Src: ISO 2859-1:1999 \| URL: https://www.iso.org/standard/1140.html \| accessed 2026-09-22]
8	Stuff the container at the CN origin port and obtain the original Bill of Lading from the ocean carrier.	CN origin warehouse + carrier	Container, packing list	Original B/L	Carrier releases the original B/L. [Src: FIATA \| URL: https://fiata.org/ \| accessed 2026-09-22]
9	Transmit the document set (invoice, packing list, B/L, certificate of origin, UN 38.3.8 summary, MSDS) to the PE consignee or their customs broker.	Tradvolt Logistics	Document set from steps 5–8	Document set received by consignee	Consignee or broker confirms receipt of the complete document set.
10	File the DUA with SUNAT, declaring HS code, value, Incoterms, and requesting channel of control (green/yellow/red).	PE customs broker (SUNAT-authorised)	Document set	DUA filing receipt	SUNAT assigns the DUA a clearance status. [Src: SUNAT — Operaciones Aduaneras \| URL: https://www.sunat.gob.pe/operaciones-aduaneras/ \| accessed 2026-09-22]
11	Pay applicable duties and IGV per the DUA; clear customs at Callao (levante); arrange inland leg to consignee warehouse.	PE customs broker + PE transport contractor	DUA, tax assessment	Customs release (levante), POD	SUNAT issues "levante" and consignee signs the POD. [Src: SUNAT — Operaciones Aduaneras \| URL: https://www.sunat.gob.pe/operaciones-aduaneras/ \| accessed 2026-09-22]
12	Reconcile DUA against commercial invoice, archive the file, and close the shipment in the ERP.	Tradvolt Trade Compliance	DUA, invoice, POD	Closed shipment file	Shipment is archived for the statutory retention period.

4. Document Checklist

Verify that each file is present in the shipment folder before closing:

Commercial_Invoice_CN-PE.pdf
Packing_List_CN-PE.pdf
Sales_Contract_or_PI.pdf (Incoterms 2020 clause)
HS_Code_Assignment_Sheet.xlsx (6-digit HS + proposed PE NANDINA)
UN_38.3.8_Test_Summary.pdf (mandatory if CATL 280 Ah cells are included; per UNECE Manual of Tests and Criteria, Rev. 7, 2023, §38.3.8)
CATL_MSDS_Rev2.pdf (mandatory if cells included)
PSI_Report_or_Exemption_Memo.pdf (per ISO 2859-1:1999 AQL 1.0 G-II)
Sungrow_ST250KTL30_UM_Rev2_1_Torque_Sheet.pdf (when PCS included — Service Manual UM-ST250-30 Rev. 2.1 §4.3)
Bill_of_Lading_original.pdf
Certificate_of_Origin.pdf
DUA_Filing_Receipt.pdf
Customs_Release_Levante.pdf
POD_Consignee.pdf

Filenames are literal and must match the ERP shipment record.

5. Indicative Timeline

Phase	Activity	Indicative duration	Depends on
Origin (CN)	Model identification, HS classification, Incoterms confirmation, booking	2 working days	Buyer PO confirmation, OEM datasheets (e.g., CATL, Sungrow)
Origin (CN)	Export declaration, container stuffing, UN 38.3.8 SOC ≤ 30 % verification	3 working days	Step 4 booking, PSI AQL 1.0 G-II clearance
Transit	Sea transit CN ports → Callao (PE)	25–32 calendar days (indicative)	Vessel schedule, port congestion
Transit	Air transit CN → LIM (if air mode)	3–5 calendar days (indicative)	Flight schedule, IATA DGR screening (per https://www.iata.org/en/programs/cargo/dgr/)
Destination (PE)	Document transmission, DUA filing, SUNAT channel assignment, levante	5 working days (indicative)	Document completeness from Step 9
Destination (PE)	Inland transport Callao → consignee warehouse	1–2 calendar days (indicative)	Levante from Step 11

All transit and clearance durations are indicative; actual durations depend on carrier schedule, port congestion at Callao, and SUNAT channel assignment. [Claim | Src: SUNAT — Operaciones Aduaneras | URL: https://www.sunat.gob.pe/operaciones-aduaneras/ | accessed 2026-09-22]

6. Duty / HS Code Block

Tradvolt classifies LFP equipment and parts using the WCO HS Nomenclature 2022 edition. The 6-digit HS subheading assigned at origin must be used as the basis for the Peruvian tariff classification (10-digit NANDINA code), determined by SUNAT at filing.

Line item (real model)	6-digit HS subheading (CN origin)	Indicative PE 10-digit NANDINA	PE duty
CATL LFP 280 Ah cell (3.2 V, 896 Wh)	8507.60 — Lithium-ion accumulators [Src: WCO HS Nomenclature 2022 Edition](https://www.wcoomd.org/en/topics/nomenclature/instrument-and-tools/hs-nomenclature-2022-edition.aspx)	MODEL ASSUMPTION — confirm via SUNAT Consulta de Tributos	MODEL ASSUMPTION — confirm via SUNAT
Highstar 51.2 V 100 Ah module rack (5.12 kWh, 16S1P)	8507.60 — Lithium-ion accumulators [Src: WCO HS Nomenclature 2022 Edition](https://www.wcoomd.org/en/topics/nomenclature/instrument-and-tools/hs-nomenclature-2022-edition.aspx)	MODEL ASSUMPTION — confirm via SUNAT	MODEL ASSUMPTION — confirm via SUNAT
BMS PCBA (BMS-Master / BMS-Slave, 16S)	8537.10 — Boards/panels for electric control [Src: WCO HS Nomenclature 2022 Edition](https://www.wcoomd.org/en/topics/nomenclature/instrument-and-tools/hs-nomenclature-2022-edition.aspx)	MODEL ASSUMPTION — confirm via SUNAT	MODEL ASSUMPTION — confirm via SUNAT
Sungrow ST250KTL-30 PCS (250 kW string inverter)	8504.40 — Static converters [Src: WCO HS Nomenclature 2022 Edition](https://www.wcoomd.org/en/topics/nomenclature/instrument-and-tools/hs-nomenclature-2022-edition.aspx)	MODEL ASSUMPTION — confirm via SUNAT	MODEL ASSUMPTION — confirm via SUNAT
Huawei SmartLogger 3000A	8537.10 — Boards/panels for electric control [Src: WCO HS Nomenclature 2022 Edition](https://www.wcoomd.org/en/topics/nomenclature/instrument-and-tools/hs-nomenclature-2022-edition.aspx)	MODEL ASSUMPTION — confirm via SUNAT	MODEL ASSUMPTION — confirm via SUNAT
LONGi Hi-MO 5m 540–555 W module (when shipped with BoS)	8541.43 — Photovoltaic cells assembled in modules [Src: WCO HS Nomenclature 2022 Edition](https://www.wcoomd.org/en/topics/nomenclature/instrument-and-tools/hs-nomenclature-2022-edition.aspx)	MODEL ASSUMPTION — confirm via SUNAT	MODEL ASSUMPTION — confirm via SUNAT
Replacement parts (DC connectors, busbars, harnesses)	8536.90 — Apparatus for switching/protecting electrical circuits [Src: WCO HS Nomenclature 2022 Edition](https://www.wcoomd.org/en/topics/nomenclature/instrument-and-tools/hs-nomenclature-2022-edition.aspx)	MODEL ASSUMPTION — confirm via SUNAT	MODEL ASSUMPTION — confirm via SUNAT

Disclaimer. PE 10-digit NANDINA classification and ad valorem duty rates for 8537.10 / 8536.90 / 8541.43 are MODEL ASSUMPTIONS and must be confirmed against the official SUNAT "Consulta de Tributos" portal and the current Arancel de Aduanas at the time of each shipment. [Claim | Src: SUNAT — Consulta de Tributos y Arancel de Aduanas | URL: https://www.sunat.gob.pe/orientacion/consultas/tributarias/index.html | accessed 2026-09-22] Tradvolt does not guarantee specific duty rates and is not liable for misclassification by the broker; classification is always the importer's responsibility under Peruvian customs law.

7. Cost Slots — Indicative

Cost slot	Basis	Status
Origin handling (CN export declaration, stuffing)	Per shipment	Indicative
Ocean freight (FCL 20'/40' Shanghai/Ningbo → Callao)	Per container	Indicative
Air freight (CN → LIM)	Per kg, chargeable weight (per IATA DGR programme)	Indicative
PE import duties (ad valorem on CIF)	CIF × applicable rate	MODEL ASSUMPTION — confirm via SUNAT at filing
PE IGV (general rate 18 %, per SUNAT)	CIF + duty + other taxable base	MODEL ASSUMPTION — confirm via SUNAT at filing
PE customs broker fee	Per DUA	Indicative
Inland transport Callao → warehouse	Per shipment	Indicative
UN 38.3.8 / MSDS Rev. 2 handling (cells only)	Per consignment	Indicative
AQL 1.0 G-II PSI (when contractually required)	Per shipment	Indicative

All non-statutory cost slots are quoted per shipment and labelled indicative; duty and IGV rows are MODEL ASSUMPTIONS and must be confirmed via SUNAT at the time of filing.

8. Roles and Responsibilities

Role	Responsibility
Tradvolt Trade Compliance	HS classification (WCO HS 2022), OEM-manual revision tracking, document archival, post-clearance reconciliation.
Tradvolt Logistics	Freight booking with FIATA forwarder, document transmission, milestone tracking.
Tradvolt Export Desk	CN export declaration per GACC, commercial invoice, packing list.
Tradvolt QA	PSI per ISO 2859-1:1999 AQL 1.0 G-II; UN 38.3.8 SOC ≤ 30 % verification; MSDS Rev. 2 file check.
PE Customs Broker (SUNAT-authorised)	DUA filing, duty/IGV payment, levante.
PE Transport Contractor	Inland transport from Callao to consignee warehouse.
Buyer / Consignee	Incoterms 2020 agreement, document-receipt confirmation, POD.

9. Compliance References (with model-specific notes)

UN Recommendations on the Transport of Dangerous Goods — Manual of Tests and Criteria, Rev. 7 (2023), Section 38.3.8 (UN 38.3.8), incl. SOC ≤ 30 % provision. Applies to CATL LFP 280 Ah cells in this SOP. [Src: UNECE — Manual of Tests and Criteria, Rev. 7 (2023) | URL: https://unece.org/transport/dangerous-goods/manuals/un-manual-tests-and-criteria | accessed 2026-09-22]
ISO 2859-1:1999 — Sampling procedures for inspection by attributes, Part 1; AQL 1.0, G-II used at Step 7 PSI. [Src: ISO | URL: https://www.iso.org/standard/1140.html | accessed 2026-09-22]
IATA Dangerous Goods Regulations (DGR) — current edition, programme page referenced. [Src: IATA | URL: https://www.iata.org/en/programs/cargo/dgr/ | accessed 2026-09-22]
ICC Incoterms® 2020 (ICC Publication No. 723E), effective 2020-01-01. [Src: ICC | URL: https://iccwbo.org/business-solutions/incoterms-rules/incoterms-2020/ | accessed 2026-09-22]
FIATA — International Federation of Freight Forwarders Associations. [Src: FIATA | URL: https://fiata.org/ | accessed 2026-09-22]
WCO Harmonized System Nomenclature 2022 Edition. [Src: WCO | URL: https://www.wcoomd.org/en/topics/nomenclature/instrument-and-tools/hs-nomenclature-2022-edition.aspx | accessed 2026-09-22]
SUNAT — Superintendencia Nacional de Aduanas y de Administración Tributaria (PE). [Src: SUNAT | URL: https://www.sunat.gob.pe/operaciones-aduaneras/ | accessed 2026-09-22]
GACC — General Administration of Customs of the People's Republic of China (English portal). [Src: GACC | URL: http://english.customs.gov.cn/ | accessed 2026-09-22]

OEM equipment references (all accessed 2026-09-22 — model pages are JS-rendered; spec confirmed at RFQ):

CATL energy-storage landing — https://www.catl.com/en/ess/
Sungrow landing — https://www.sungrowpower.com/en (Service Manual UM-ST250-30 Rev. 2.1, §4.3 torque values)
Huawei FusionSolar landing — https://solar.huawei.com/en
LONGi landing — https://www.longi.com/en/

10. Reader-Facing CTAs

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