Russian Client Visits Hengnuo Centrifuge Factory | News

They already sell our Mini15 by the pallet. On 28 October 2026 the same Russian partner came back to our factory to define the next platform: a large-capacity refrigerated centrifuge that has to deliver more capacity in a smaller footprint, travel light, and run faster per shift.

On 28 October 2026, a delegation from a Russian laboratory equipment distributor spent a full day at the Hengnuo manufacturing base and application lab. It was not a first visit. The two teams have been working together for years — the partner places repeat orders for our Mini15 micro-centrifuge and has taken several OEM/ODM projects through to series production. This time the agenda was narrow and specific: the large-capacity refrigerated centrifuge the two sides have been discussing for months, now moving from a concept on paper to a definition on the bench.

Repeat orders change the nature of a factory visit. Because the partner already runs Mini15 units in the field, the conversation did not start with a company introduction or a brochure — it started with specifications, tolerances and the three or four points that have caused friction in past shipments.

That history also set the tone for the day. The client brought his own reference unit data, asked to compare a freshly assembled Mini15 against the units already in his market, and spent most of the morning on the larger platform rather than on the products he already knows.

The requirement the partner has been pushing for is a familiar contradiction in lab design: capacity keeps rising, floor and bench space does not. The brief discussed at the factory came down to four constraints.

The delegation opened both large-capacity refrigerated units himself, checking rotor seating, the lid interlock and the hinge and gas-strut behaviour — the parts that fail first in daily use. He then loaded 50 mL conical adapters and 15 mL adapters into the swing-out buckets to count usable positions and verify that partially filled buckets stay within the imbalance tolerance.

From there the testing moved to the parameters that decide whether the platform suits his market:

• Temperature pull-down to 4 °C from ambient, and how quickly the chamber recovers after the lid is opened mid-run
• Maximum RCF with a fully loaded rotor, and whether the ramp profile can be softened for delicate samples
• Noise and vibration at working speed, measured against the level his clinical customers will accept
• Control panel logic: program library, direct RCF entry, error-code readout, and how easily the interface can be re-labelled for a Russian-language OEM version

The afternoon moved to the Mini15 he orders repeatedly — a short but useful exercise. Comparing a new unit with the versions already in service let both sides confirm batch consistency on speed accuracy, lid-lock feel and motor noise, and gave the client the evidence he needs for his own service team.

Because the partner prefers to sell under his own brand, roughly half the discussion was not about centrifuges at all. The topics on the table:

• Industrial design: housing colour and finish, logo placement, trim parts and a panel layout that matches his catalogue
• Control panel and firmware: Russian and English interface, preset programs built around local protocols, error messages in the destination language
• Manual, label and packaging: Russian instructions for use, nameplate data, carton printing and drop-test requirements
• Certification documentation: CE declaration and test report, ISO 13485 quality system evidence and RoHS compliance statement — supplied under the partner's brand
• Mould, MOQ and first-article approval: where the mould cost sits, how the pilot run is approved, how the ramp to series production is staged
• Lead time, spare parts and training: initial spare parts kit, rotor and gasket availability, engineer training before the first shipment
• Territory: whether the OEM agreement covers his region exclusively

Weight and throughput are not marketing words — they translate into specific engineering trade-offs, and the client tested them as such:

• How much weight can come out of the housing and base without losing rigidity at maximum RCF
• Whether a lighter rotor construction keeps fatigue life inside the inspection interval
• Cooling capacity at full load, and whether the compressor can hold 4 °C with every position occupied
• Imbalance tolerance with unevenly loaded buckets, and how the unit behaves when a tube is missing
• Service access to the compressor, the brushless motor and the lid sensor without removing the whole housing

Both sides left with a short, concrete list rather than a general intention to continue talking:

• Freeze the specification sheet: capacity, maximum RCF, temperature range, footprint, unit weight, noise level and 220 V / 50 Hz configuration
• Issue an appearance proposal and 3D render for the OEM housing
• Prepare a prototype or a modified standard unit for in-country trials with our own sample types
• Quote with tooling amortisation and MOQ tiers, so the partner can model his landed cost
• Confirm the certification document package and who signs the CE declaration for the OEM-branded unit
• Agree a target timeline for first-article approval

"What we need is not another catalogue model. We need one platform that covers our tube formats, is light enough for our engineers to move, and carries our brand — and we need the specification fixed before we commit."

—  CEO & Technical Director, Russian partner company