Worldwide B2B wholesale · Guangzhou, China · Hengyue E-Commerce Shop
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Quality & testing

How we control and verify product quality before shipment.

Purity

HPLC purity of 98% or higher on standard products. Chromatograms available on request.

Identity

Mass spectrometry (MS) confirmation of molecular identity for each product line.

Third-party testing

Independent laboratory verification can be arranged on request for larger orders.

What we control

Every batch is checked before it leaves the warehouse.

Frequently requested documents

Tell us which documents you need when you place your order and we will confirm availability.

Analytical

HPLC chromatogram, MS spectrum, purity report.

Commercial

Commercial invoice, packing list, certificate of origin (where applicable).

Documentation is confirmed per order and per product line. Please state your requirements before payment so we can confirm what can be provided.
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