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We are not the factory — which means we can inspect it. Every unit is pressure and leak tested at end of line, and every order runs three-stage inspection with an AQL pre-shipment check, documented with data and photos.
Most hydraulic failures are not manufacturing failures — they are dimensional and sealing failures: a bore ground a few hundredths out, a batch of cup seals from a different mould, a port thread cut to the wrong pitch. Our inspection points are placed exactly where those errors appear.
We review the production plan, the casting batch, the drawing revision and the seal supplier before the line starts — eliminating risk at the source rather than catching it at the end.
Inspectors monitor the line early in the run to catch deviation while it is still cheap to fix: bore diameter drift, port thread pitch, surface finish, seal seating and piston fit.
A full check against AQL and your drawing covering function, appearance, dimensions, packaging and labelling — with the pressure-test record and high-resolution photographic evidence.
We oversee loading sequence and container condition to prevent transit damage, and record the loading on photo and video. Cast iron units are checked for anti-rust wrapping before they are loaded.
Inspection bench at a partner factory we audit — dimensional and pressure checks before packing.
Data-driven report per stage, with measurements and photo evidence against AQL.
100% end-of-line pressure and leak test, recorded per batch with the test pressure stated.
Bore diameter, port thread and mounting bore distance measured against the drawing for the batch you received.
B/L, C/O, packing list and commercial invoice, issued under one consistent format.
Unlike a certificate graphic, the registrations below can be checked against the official database in a minute. We publish the registration numbers so your compliance team does not have to ask us for them.
| US Reg. 5,931,537 | Registered trademark RTYPER — USPTO, Class 7, registered 10 Dec 2019. Search the number in the USPTO trademark database. |
|---|---|
| CN Reg. 19636787 | Registered trademark RTYPER — CNIPA, Class 7, valid to 27 May 2027. |
| CN Reg. 26359676 | Registered trademark RAWBOW — CNIPA, Class 7, valid to 27 Aug 2028. |
| CN Reg. 54687291 | Registered trademark 福步 — CNIPA, Class 7, valid to 27 Nov 2031. |
| 100% Pressure tested | Every unit leak tested at end of line, with a batch record issued per order. |
| SGS / BV / TÜV | Third-party inspection arranged on request, at your cost, before the container is loaded. |
| DOT 3 / DOT 4 | Seals and fluid paths compatible with the standard brake and clutch fluids. |
On quality-system certificates: IATF 16949 and ISO 9001 are held by a producing factory, not by us, and they are issued per plant. We do not display them as our own credential. If your market requires a system certificate, tell us which part numbers you are buying and we will send the certificate of the plant that actually runs them.
Official registration certificates — click to enlarge:
Material and part storage at a partner factory in Zhejiang — photographed on one of our scheduled audits.
A trading company that pretends to own a plant has to explain, eventually, why the plant says something different. We do the opposite: we name the arrangement up front, then show you the evidence from our own visits.
Buyers who know hydraulics ask for numbers, not adjectives. These are the parameters we report.
Measured at three heights and two axes, with a stated batch tolerance against the drawing.
Checked with a go / no-go gauge. A thread that accepts the union but not the seal face is a leak waiting to happen.
Every unit held at test pressure with no drop across the seal, recorded per batch.
Bore roughness measured — too rough wears the cup seal, too smooth lets fluid bypass it.
EPDM or SBR verified against the specification, and fluid compatibility confirmed by soak test.
Full piston travel measured against the drawing — the figure that decides whether the brakes release cleanly.
Mounting bore distance and flange face flatness checked against the OE pattern.
Coating and anti-rust wrap verified, including a salt-spray result on cast iron bodies.
We will send the report template, a batch pressure-test record and the certification list for the part numbers you buy.
RTYPER — US
RTYPER — China
RAWBOW — China
福步 — China