Where is Centi located?

Centi is headquartered in Huangpu District, Guangzhou, China. The facility handles moulding, assembly, quality assurance and export packaging. Sales is reachable by phone (+86-13922238462) and email (sales@centidiffuser.com).

Does Centi sell to individual consumers?

No. Centi is a B2B manufacturer serving hotel procurement, scent-marketing agencies, multi-site retail chains, real-estate developers, spa and clinic operators and OEM/ODM distributors.

Can Centi build a scent diffuser to my specification?

Yes, through the OEM programme. Submit the specification (casing colour, finish, packaging, firmware feature scope) to Centi sales; the project quote returns MOQ, lead time and unit cost.

What is the warranty on Centi scent diffusers?

Every Centi factory shipment includes a one-year replacement-and-maintenance warranty against manufacturing defects under normal use. Consumables (fragrance oil, atomizer cores beyond the included spare) are not covered.

Does Centi supply fragrance oil?

Yes. Centi sells its own fragrance-oil line tested against the diffuser hardware. Buyers may also qualify third-party oils through Centi\u2019s sample programme.

Can Centi ship a single unit for evaluation?

Yes. Sample units ship under the standard EXW USD reference price for the line item plus freight and destination-country compliance.

How many scent diffuser machines does Centi publish?

The current published catalogue lists 24 active product lines, of which 19 carry an EXW USD reference price and 5 are quoted per project.

Where is Centi located?

Centi is headquartered in Huangpu District, Guangzhou, China. The facility handles moulding, assembly, quality assurance and export packaging. Sales is reachable by phone (+86-13922238462) and email (sales@centidiffuser.com).

Does Centi sell to individual consumers?

No. Centi is a B2B manufacturer serving hotel procurement, scent-marketing agencies, multi-site retail chains, real-estate developers, spa and clinic operators and OEM/ODM distributors.

Can Centi build a scent diffuser to my specification?

Yes, through the OEM programme. Submit the specification (casing colour, finish, packaging, firmware feature scope) to Centi sales; the project quote returns MOQ, lead time and unit cost.

What is the warranty on Centi scent diffusers?

Every Centi factory shipment includes a one-year replacement-and-maintenance warranty against manufacturing defects under normal use. Consumables (fragrance oil, atomizer cores beyond the included spare) are not covered.

Does Centi supply fragrance oil?

Yes. Centi sells its own fragrance-oil line tested against the diffuser hardware. Buyers may also qualify third-party oils through Centi\u2019s sample programme.

Can Centi ship a single unit for evaluation?

Yes. Sample units ship under the standard EXW USD reference price for the line item plus freight and destination-country compliance.

How many scent diffuser machines does Centi publish?

The current published catalogue lists 24 active product lines, of which 19 carry an EXW USD reference price and 5 are quoted per project.

Scent Diffuser Manufacturer in Guangzhou

Scent diffuser manufacturer in Guangzhou

Centi is a Guangzhou-based scent-diffuser manufacturer serving international B2B buyers since the original equipment-manufacturer (OEM) and original design-manufacturer (ODM) programmes began. We design, mould, assemble and ship commercial, hotel, HVAC, home and car scent-diffuser machines from our Huangpu District facility under EXW USD pricing, with factory-direct quotes returned within the buyer-request workflow.

What we manufacture

Centi’s published catalogue spans 24 active product lines organised across five use-case families:

Hotel scent diffusers — wall-mounted corridor units, large-capacity HVAC-integrated machines, and bedside nightstand models. Hotel buyers typically order the WJ-SP01 for back-of-house zones and the WJ-EI01, WJ-DI01 or WJ-LI01 series for HVAC duct deployment.
Commercial scent diffusers — floor-standing and tabletop units for office receptions, retail concourses, spa reception areas, serviced offices and showroom environments. The WJ-MI01, WJ-VI01, WJ-VA01 and WJ-LI02 lines cover the mid-to-large-volume segment.
HVAC scent diffusers — units designed to connect to a building’s central air-handling system. The WJ-EI01, WJ-DI01, WJ-LI01 and WJ-LI02 lines are HVAC duct-ready; the WJ-AC01 is the smart add-on module for new and retrofit BMS integration.
Home scent diffusers — compact, waterless, heat-free units for bedrooms, living rooms and home offices. The WJ-HP01, WJ-BP01, WJ-SI01, WJ-SI02, WJ-UA01, WJ-AS01 and WJ-CP01 lines cover the home segment with finishes in white, black, wood-grain and gold.
Car aroma diffusers — portable, USB-powered or battery-operated units sized for in-car use and personal travel. The WJ-CP01, WJ-RA01, WJ-RA02 and WJ-TA01 lines carry this segment.

Technology platform

Every Centi scent diffuser machine in the current catalogue uses cold-air diffusion — a precisely metered airflow feeds fragrance oil through a calibrated nozzle without heating the oil and without adding water. Cold-air diffusion is the technology specified by scent-marketing agencies because the top notes of the fragrance oil reach the visitor unaltered, the droplet size stays consistent across the full duty cycle, and no moisture is added to the air (which matters for wood furniture, electronics and HVAC ductwork). Detailed engineering notes are published on the cold-air diffusion page.

OEM and ODM programmes

Centi runs both OEM and ODM programmes for international distributors, hotel chains and brand buyers. OEM covers full artwork, casing colour, packaging design and (optionally) firmware feature scope; ODM adapts an existing catalogue design to the buyer’s configuration — typically adding Bluetooth, changing the casing finish, or attaching the buyer’s logo — without redesigning the core mechanical or electronic platform. In both modes Centi retains the engineering platform and the workshop control; the buyer owns the brand and the end-customer relationship. Minimum order quantity and pricing are returned per project.

Certifications and compliance

Every Centi scent diffuser machine ships with CE, CB and RoHS conformity documentation. Compliance documentation for destination markets (FCC for the US, UKCA for the UK, RCM for Australia, KC for South Korea, PSE for Japan, BIS for India and others) is bundled with the project quote on request. Fragrance oils sourced through Centi comply with IFRA categories 4 (fine fragrance) and 11 (air freshener) and with EU fragrance-allergen disclosure requirements where applicable.

Trade terms

Centi publishes EXW USD reference prices on every published product line. Shipping, duties, taxes and destination-country compliance are quoted separately by the buyer’s freight forwarder or by Centi sales. Lead time is communicated in the quote document returned after a buyer submits a quote request. Payment terms and tooling schedules are confirmed per project.

Frequently asked questions about Centi

Where is Centi located?: Centi is headquartered in Huangpu District, Guangzhou, China. The facility handles moulding, assembly, quality assurance and export packaging. Sales is reachable by phone (+86-13922238462) and email (sales@centidiffuser.com).
How many scent-diffuser machines does Centi publish?: The current published catalogue lists 24 active product lines, of which 19 carry an EXW USD reference price and 5 are quoted per project. The catalogue is updated as new models complete the engineering qualification cycle.
Does Centi sell to individual consumers?: No. Centi is a B2B manufacturer serving hotel procurement, scent-marketing agencies, multi-site retail chains, real-estate developers, spa and clinic operators and OEM/ODM distributors. The online catalogue is a quotation reference; orders are placed through the quote-request workflow.
Can Centi build a scent diffuser to my specification?: Yes, through the OEM programme. Submit the specification (casing colour, finish, packaging, firmware feature scope) to Centi sales; the project quote returns MOQ, lead time and unit cost.
What is the warranty?: Every Centi factory shipment includes a one-year replacement-and-maintenance warranty against manufacturing defects under normal use. Consumables (fragrance oil, atomizer cores beyond the included spare) are not covered. Warranty service is opened by contacting Centi after-sales during the warranty period and presenting the warranty card and commercial invoice.
Does Centi supply fragrance oil?: Yes. Centi sells its own fragrance-oil line tested against the diffuser hardware. Buyers may also qualify third-party oils through Centi’s sample programme. Published consumption figures are based on a Park Hyatt reference oil with density ≥ 0.95 g/ml.
Can Centi ship a single unit for evaluation?: Yes. Sample units ship under the standard EXW USD reference price for the line item plus freight and destination-country compliance. Contact Centi sales to open a sample request.

References and source documents

Centi Guangzhou factory quality management and CE / CB / RoHS conformity documentation, available on request with NDA for confirmed purchase enquiries.
Product specification tables (24 models), current edition 2026-09.
Warranty card and after-sales terms bundled with every Centi factory shipment.
Compliance with EU fragrance-allergen disclosure requirements under IFRA categories 4 (fine fragrance) and 11 (air freshener) where applicable to the deployed fragrance oil.
Centi product catalogue revision log (current edition 2026-09); specifications subject to change without notice.