1 published equipment referenceLatest source review 2026-10-11
01 / COMPANY
What this manufacturer offers
Beijing Sunjet, legally 北京上佳蓝基制冷设备有限公司, is a manufacturing lead for custom fin-and-tubeheat exchangers. The CRM record gives 13 December 2002 as the legal entity’s establishment and declares refrigeration/air-conditioning manufacture. The official English overview says the business began in 1989, but no reviewed document explains that earlier history or predecessor. Those dates remain separate rather than being combined into an unsupported company age.
Its current official site places the factory in Nangong’s East Development Zone, Hebei, while the preserved legal registration is in Beijing’s Daxing district. Four original coil-pattern sheets name the same Beijing legal entity and give concrete tooling, fin and end-plate options. Original process and coil photographs add fabrication context. The displayed ISO 9001:2000 document expired in 2009; broad current compliance and UL wording therefore need fresh, exact-scope verification before procurement.
Legal identity and date
北京上佳蓝基制冷设备有限公司; CRM 13 December 2002Website’s 1989 history unconnected to this legal date by reviewed predecessor evidence. Source
Registered versus factory location
Beijing Daxing registration; Nangong East Development Zone, Hebei factory statedOfficial Chinese footer and contact give the factory separately; no current site visit. Source
Original tooling scope
7/7.94, 9.52, 12.7 and 15.88 mm tube-pattern sheetsFour original drawings visually read, each naming the Beijing legal entity. Source
Historical quality image
GB/T 19001-2000 / ISO 9001:2000; expired 14 September 2009Original certificate image read; no current renewal/issuer status established. Source
Independent platform listing
Refrigeration-market profile names the company and Beijing Liuxiying-area addressIndustry listing is additional commercial identity evidence, not a performance test or factory audit. Source
Manufacturing and scale limits
Custom coils; stated 30,000 m² plant and over 150,000 units/yearArea/throughput and fully compliant wording remain supplier claims without independent current audit. Source
Parameters and source limits · Custom fin-and-tube family
Swipe the table, or focus it and use arrow keys, to read conditions and sources.
Manufacturer-published information · Custom fin-and-tube family
Parameter
Published value
Conditions and evidence
Four source sheets
7/7.94, 9.52, 12.7 and 15.88 mm tube options
Original drawings visually read; no one-page-per-diameter or numbered-photo padding. Source
9.52 mm rectangular option
Tube matrix 25.4 × 25.4 mm; fin spacing 3.0–6.35 mm
One specific tooling option, not all 9.52 mm configurations. Source
15.88 mm rectangular option
Tube matrix 50 × 50 mm; fin spacing 4.0–8.0 mm
One specific larger-tube option; source also offers other matrices. Source
15.88 mm tube wall choices
Smooth copper φ15.88 × 0.5 or × 0.75 mm
Manufacturing choices, not a calculated or approved pressure rating. Source
Smaller-tube material scope
7 mm sheet includes rifled/smooth copper and aluminium tube choices
Actual pattern/material combination requires order confirmation; not transferred to larger sheets. Source
Missing selected-duty file
No current capacity, air/fluid pressure loss, circuit/connection or design-pressure schedule
Obtain conditioned selection and approved drawing before purchase. Source
03 / PROJECT REVIEW
Match Sunjet’s custom-coil process to the ordered thermal design
Resolve the manufacturing and historical identities
Match quotations, drawings and shipping/quality documents to the actual contracting and manufacturing party. Official tooling sheets and the Chinese site footer name the Beijing company, while current contact identifies a Nangong factory. Obtain the current operating entity and order-production location in writing.
The website’s 1989 history differs from the CRM’s 2002 registration. No reviewed predecessor record explains it. The industry platform’s Beijing address adds dated/commercial context rather than proving the present Hebei workshop or a specific relocation date.
Use the original drawings as manufacturing questions
The four original sheets define tube diameters, transverse/longitudinal pitch alternatives, fin spacing and end-plate construction. They are concrete supplier tooling evidence, not a current thermal performance table. Ask which pattern, material, tube wall and circuit the supplier will use for the actual coil.
Several options are diameter-specific: the 15.88 mm sheet names smooth copper tube with 0.5/0.75 mm wall choices, while smaller sheets include other tube/material alternatives. Do not transfer every option across the entire catalogue or assert that a pictured coil uses one particular pattern.
Explain what the original fabrication images establish
Three original equipment images show copper-tube feeding/working equipment and larger workshop machinery; the original product montage shows multiple finned-coil configurations. These are supplier-presented fabrication evidence, not an independently observed inventory or verified capacity record. Dates, current ownership and throughput are unknown.
For an OEM order, request the actual process flow, material traceability, tube/fin joining or expansion, cleanliness, pressure/leak testing and dimensional inspection records. A tooling drawing or machine photograph does not demonstrate duty, pressure approval or installed performance.
Require current quality and exact component scope
The readable ISO image applies to production/service of heating-exchanger and fan-coil products under ISO 9001:2000, with validity ending 14 September 2009. It is historical evidence only. Ask for current quality-system certification and issuer verification before describing the company as presently certified.
A small framed UL document is also displayed, but its exact file, model and date were not reliably readable at original resolution and current status was not checked. Do not turn it into a whole-catalogue approval. Request the exact current component listing and scope for the ordered material/design.
Approve the complete custom-coil selection
Provide the fluid/refrigerant, entering air and fluid conditions, duty/flow, allowable pressure loss, corrosion environment, space and connection constraints. Obtain a current thermal selection, circuit/BOM, drawing and agreed acceptance file rather than selecting an unlabeled numbered photo.
The industry listing names additional fan/fan-coil products, but no current official selected-unit schedule was established; those are not expanded into new product pages. Current price, lead time and independent delivered results remain unknown. Company-domain contact found in the original official image is retained privately in CRM.
Match manufacturing responsibility
Confirm legal history, current Nangong production and contracting party.
Select the actual coil
Approve tooling/material/circuit and conditioned thermal/hydraulic data.
Verify current documents
Obtain exact quality/component scope and order-test records.
07 / TRANSPARENCY
Sources and review scope
Compiled by HVACDeck Editorial. Page review: 2026-10-11. Publications are attributed below; their statements are not independent measurements by this platform.
Official custom-coil overviewChecked 2026-10-11 · Complete English overview read; 1989, plant size, output and compliance claims kept within supplier scope.
Official coil-pattern sheetsChecked 2026-10-11 · Four full original drawings visually read; Beijing legal name, diameter-specific geometry/material options retained.
Historical ISO imageChecked 2026-10-11 · Original Chinese image read; issue 15 September 2006 and expiry 14 September 2009.
Refrigeration-market company profileChecked 2026-10-11 · Full industry-platform company profile read; other suppliers/recommended products excluded.
Original 9.52 mm sheetChecked 2026-10-11 · Specific rectangular matrix and fin-spacing column visually read.
Original 15.88 mm sheetChecked 2026-10-11 · Specific rectangular matrix, spacing and smooth-copper wall alternatives visually read.
Original 7/7.94 mm sheetChecked 2026-10-11 · Tube/material choices read within this sheet’s scope.
Original coil montageChecked 2026-10-11 · Original multiple-coil photo visually inspected; no numbered entry promoted as a rated model.
