Get a Quote
+86 138 0000 0000
+86 138 0000 0000
sales@hengyou-chem.com

Service & Support

From selection and samples to packaging and logistics — we meet you at every step of raw material sourcing.
Home > Service & Support

Our Services

Four Core Services

Each service comes with clear conditions — what we can do, and what we don’t promise.

Technical Support

Formulation and application selection advice, grade and particle size selection, and process troubleshooting.

To get started: tell us your application area and target performance first — recommendations depend on them.

Not included: full formulation development on our side, or unverified performance promises.

Ask a technical question →

Sample Service

Sample dispatch to support your lab and pilot testing before you commit to an order.

To get started: sample policy (quantity, cost, freight) is confirmed with your request — tell us the product and application.

Not included: blanket “free samples” — terms are confirmed per request.

Request a sample →

Customization

Custom grades, particle sizes, packaging and labels configured to your application.

To get started: customization requires a confirmed minimum quantity and a clear application scenario — feasibility and lead time are confirmed before quoting.

Please note: not every grade can be customized — we confirm what is feasible per product.

Discuss customization →

Packaging & Logistics

Packaging options per product, export documentation coordination, and delivery arrangements to your destination port.

To get started: document types and lead times are confirmed with your quotation, based on product, quantity and destination.

Not included: unconfirmed service-level commitments — what we can provide is stated per order.

See logistics details →

How It Works

Our Six-Step Service Process

What you provide and what we provide at each step — so you always know where things stand.

STEP 1

Requirement Discussion

You provide: product, specification, quantity and application scenario.

We provide: a clear list of what we need to proceed.

STEP 2

Selection Advice

You provide: your target performance and constraints.

We provide: grade and specification recommendations — including options that do not fit.

STEP 3

Sample Validation

You provide: testing of the sample in your process.

We provide: sample dispatch and any documents you need for the trial.

STEP 4

Quotation & Order

You provide: confirmation of specification, packaging, quantity and destination port.

We provide: a quotation with confirmed lead time and documents.

STEP 5

Preparation & Inspection

You provide: order confirmation and any inspection requirements.

We provide: batch verification, pre-shipment inspection and COA with the shipment.

STEP 6

Shipment & After-sales

You provide: delivery feedback and any follow-up issues.

We provide: shipping documents, dispatch, and ongoing support for formulation adjustments.

Capabilities

What We Can Back With Proof

Four capabilities, each with documents or references you can check.

  • Supply Network — Selected qualified manufacturing partners, with specifications verified before supply — see our supply model.
  • Documentation — COA, TDS, SDS and compliance documents — see certifications and downloads.
  • Customization — Grade, particle size and packaging customization — terms confirmed per request with minimum quantity.
  • Communication — Working hours: Mon – Fri, 9:00 – 18:00 (GMT+8). Reach us by email or phone; response is confirmed with each inquiry.
Hengyou Chemical production workshop

Service FAQ

Common Service Questions

How do I request a sample, and is it charged?

Request a sample through the contact form — tell us the product and application. The sample policy (quantity, cost, freight) is confirmed with your request before dispatch.

How long does a sample take to arrive?

Delivery time depends on the product, destination and shipping method — it is confirmed when your sample request is arranged.

What is the minimum quantity for a custom grade?

The minimum is confirmed per product and specification — it depends on the grade, particle size and packaging involved. Ask us before quoting.

Can you arrange third-party inspection?

Yes, third-party inspection (e.g. a designated surveyor) can be arranged on request for specific shipments — cost and arrangement are confirmed with your order.

When do I get the documents (COA / TDS / SDS)?

TDS and SDS are available on request or with the quotation; the COA is released with your shipment, matched to batch.

Self-Service

Get Documents Without Waiting

Request what you need directly — no call required.

Request COA / Spec Sheet / SDS

Tell us your product and grade — we will send the relevant documents by email.

Request Documents →

Download Catalog & Documents

Product catalog, TDS, SDS and COA sample formats from the resource center.

Download Center →

Ready to move forward?

Pick the path that fits: talk to our team, request a sample, or ask a technical question.

Request a Quote or Sample

X