CASE 01
Case type and requested outcome
Choose document review, batch question, leakage, charging, damage, packaging, logistics or another after-sales issue.
Contact Us / Compliance / After-Sales
Documents & After-Sales
Send product, batch, document or after-sales questions to the right team.
02
Changhan Technology
Support Case
Send a Product Support Case
Send the model, formula, batch or order, plus evidence and the result you need.
CASE 02
Product and order identity
Provide model, SKU, formula, batch or lot, order reference, quantity affected and destination.
CASE 03
Evidence and chronology
Attach clear photos, video stills, records and a factual sequence of storage, transport and use conditions.
Next Steps
Support Steps
Clear product details and evidence help the right team respond.
01
Log the case
Record the buyer, product, batch, order, issue type, date and requested outcome.
02
Assign the responsible team
Route the case to sales, quality, document support, production or logistics as appropriate.
03
Review records and evidence
Compare the report with available specifications, samples, batch or shipment information.
04
Reply with next steps
Request any missing photos or records, share available documents or respond to the reported issue.
Buyer Support
FAQs
What does a support case need?
Provide the exact product, model or formula, batch or lot, order reference, affected quantity, destination, chronology and requested outcome.
Which files help the review?
Useful files may include product and pack photos, labels, batch details, shipment records, video stills and the exact document requested. Avoid sensitive personal or payment information.
How are product issues handled?
The team reviews the product, order, affected quantity and supporting photos or records, then replies with the available next steps. For urgent health or safety incidents, contact local emergency services or the relevant authority.
Contact Options
More Contact Options
Inquiry / Quote
Send your company, market, product, volume, timing and files.
OEM / ODM Sampling
Tell us what you need to test, for which market and by when.
Stock Products
Check current product, pack and quantity options for your market.
Sales Contacts
Reach the right contact for your country, product and project stage.
Product support
Open a Document or Support Case
Identify the product, order or batch, describe the issue or record needed, and attach non-sensitive evidence.