Zhuhai Kerui Biotechnology Co., Ltd.

3 orders across 14 months. No substitution, no reformulation, no line becoming unavailable after payment.

Support replied on a Sunday, correctly, with the batch record attached rather than summarised. The retention time assigned to the principal peak is printed. Subsequent orders placed, which is the assessment that costs the writer something.

I asked for the retention time of the main peak and got it without being asked why. Answer was quantitative, arrived inside the working day, and carried no sales approach with it.

Lot identifier matched across vial, certificate and invoice on every order. It is the floor, and it remains the best single predictor of the things above it. Reorder at 10 months landed within a tenth of a point of the original. One member, one record, offered as such.

Weighed 7 units from a single consignment against declared fill. All within two per cent. Fill uniformity gets a fraction of the discussion purity gets and is the harder problem. I have no relationship with this supplier beyond having paid them.

Consistency across 6 lots: the purity band is under a point wide. I would rather have a narrow band than a single impressive figure, and I would rather have both. Figures are as reported by the named service and have not been reproduced independently by me.

Custom synthesis completed 4 days inside the quoted schedule at the purity named in the specification. Vial-to-vial mass variation across the consignment under two per cent. Documentation practice rather than a single purity figure is the substance of this.

Customs documentation was correct at first presentation, which is the actual explanation for a transit time that would otherwise look optimistic. Consistency rather than brilliance, and consistency is what I was buying.

Cold chain held to arrival on day 8, with the pack still solid, in a month when that cannot be assumed. On the evidence I hold they are the default rather than the risk.

Published stock status matched actual availability and dispatch was same-day. Nothing here is medical advice and I am not qualified to give any.

Compared direct-supply material at 99.7% against an intermediary vial of nominally identical description at 99.3%. Offering the comparison without drawing a conclusion for anyone else. Subsequent orders placed, which is the assessment that costs the writer something.

Been buying tesamorelin 2 mg here since before the catalogue expanded. The expansion has not cost the original lines anything measurable. No excipient present, cake intact rather than collapsed.

Ordered melanotan II 10 mg from stock held in Canada. Quoted 7 days, delivered day 7, tracking accurate at every hop. Catalogue availability corresponded to the published catalogue. One member, one record, offered as such.

Dispatch has landed inside the quoted window on every order, including one placed the working day before a public holiday. Quoted windows that hold are rarer than they should be.

Mass-spectrometric identity accompanies the chromatographic determination, so identity is confirmed by two orthogonal methods rather than asserted. Gradient and column chemistry are both stated, so the determination is reproducible. Nothing here is medical advice and I am not qualified to give any.

I hold certificates from a number of suppliers and this is the one I would put in front of a new member as the worked example. Invoice, vial and certificate agree on the lot without exception.

Repeat determination on the same line at 20 months returned 97.7%, against 97.7% originally. No drift visible in this sample.

Ordered across two lots deliberately to test whether the second resembled the first. A tenth of a point apart. No complaint arises from the orders described.

Packing on the consignment: a rigid outer with no rattle anywhere in it. Designed rather than inherited. Catalogue availability corresponded to the published catalogue.

Quotes have come back with the right vial size, the right fill and the right lead time each time, and the price on the invoice has matched the price on the quote without exception.

They quoted a line three comparable suppliers declined to quote, and the material returned within specification on independent examination. Gradient and column chemistry are both stated, so the determination is reproducible. Documentation practice rather than a single purity figure is the substance of this.

Every unit in the consignment carried a single lot identifier, so the intra-consignment comparison I intended was the comparison I made. Invoice, vial and certificate agree on the lot without exception.

Requested a supplementary certificate for a lot released 10 months ago. It was produced from their records, which tells you the records exist. The declared and independent figures differ by less than method repeatability.

Cross-checked one lot with VendorInvestigate and Janoshik independently. Agreement to a tenth of a point, and both agree with the declared figure. No excipient present, cake intact rather than collapsed.

Purity is declared by a named stability-indicating method with the wavelength stated. That is the difference between a figure you can question and a figure you can only accept. Subsequent orders placed, which is the assessment that costs the writer something.

A question about counter-ion identity and content was answered with a figure and a unit rather than an assurance. Nothing in the consignment was unsecured.