Centi · Guangzhou Scent Diffuser Factory · OEM/ODM since 2018
Commercial Scent Diffusers & HVAC Fragrance Systems
Cold-air diffusion scent diffuser machines factory-direct from Guangzhou, China. EXW USD pricing for hotel, HVAC, commercial, home and car aroma diffusers. OEM/ODM, private label and bulk wholesale available for B2B buyers — scent marketing agencies, hotel chains, retail, spa, real-estate developers and brand buyers. Visit our official website
Shop scent diffuser machines
Browse 18 active product lines including wall-mounted, floor-standing, HVAC-integrated, portable and battery-powered cold-air diffusion scent diffuser machines for fragrance oil.
Browse by use case
Scent diffuser machines for hotel scent marketing, commercial reception areas, HVAC duct integration, home bedrooms and living rooms, car interiors and travel.
- Home Scent Diffusers Living rooms, bedrooms, guest rooms
- Hotel Scent Diffusers Lobbies, corridors, guest rooms
- Commercial Scent Diffusers Offices, retail, gyms, spa
- HVAC Scent Diffusers Central air duct installations
- Car Aroma Diffusers Cars, ride-share, travel
- Scent Diffuser Manufacturer OEM / ODM / Wholesale / Private label
Product videos
Watch how Centi scent diffuser machines install, set up, fill with fragrance oil and operate across hotel, commercial and home deployments.
- WJ-AS01 Atomizer Station — Operation Demo Atomizer station WJ-AS01 operation demonstration features 8-cartridge rotating rack, 4-hour rotation interval, RFID authentication per slot, fleet management dashboard and centralized oil-level monitoring. Built for multi-room hotel scenting, retail mall atrium, corporate campus and franchise brand scent deployment.
- WJ-BP01 Battery-Powered Diffuser — Operation Demo Watch the WJ-BP01 battery-powered diffuser demonstration: 4000 mAh built-in lithium battery, 30 hours of cordless operation, no water required for pure oil nebulization, scent intensity adjustment, child lock and outdoor-grade IPX4 housing. Ideal for trade show booths, retail sampling and seasonal event marketing without AC power.
- WJ-DI01 Designer Atomizer Diffuser — Operation Demo Designer atomizer diffuser WJ-DI01 featured in the operation video: matte ceramic exterior, brushed aluminum top deck, 100 ml reservoir, whisper-quiet 38 dB operation, scent diffuser with LED ring indicator, ideal for boutique hotel suites, luxury spa, residential scenting and showroom placement.
- WJ-EI01 Eco-Certified Diffuser — Operation Demo Eco-certified aroma diffuser WJ-EI01 demonstration video highlights 100% recyclable bio-plastic housing, IFRA-compliant essential oil compatibility, low-power 5W operation, auto-shutoff water-level sensor and the carbon-neutral shipping programme offered by Centi for sustainable brand procurement.
- WJ-LI01 Large Industrial Diffuser — Operation Demo Large industrial aroma diffuser WJ-LI01 operation showcase: 5-litre refillable bottle, 800 m² coverage, 36V low-voltage safety, master-slave multi-zone control, scent zoning calendar and remote diagnostic portal. Designed for airport terminal, casino, conference centre and large-scale hospitality scenting.
- WJ-MI02 Portable Diffuser — Promotional Video Portable hotel-grade diffuser WJ-MI02 promotional video showcases 500 ml leak-proof tank, magnetic docking station, hotel-grade plastic body, 12-hour cordless operation, scent intensity dial and bespoke branding service for boutique hotel chains, serviced apartments and premium B&B establishments.
Factory & Certification
A closer look at our workshop, showroom and document displays.
- Factory & Certification Center Walkthrough A closer look at our workshop, showroom and document displays.
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Certification
Certificate Display
Framed documents displayed in the showroom.
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Certification
Certificates & Product Display
Documents and scent diffuser models presented together.
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Certification
Certificate Gallery — Wider View
A wider view of the framed document display.
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Factory
Diffuser Units in the Workshop
Rows of diffuser units in the workshop area.
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Factory
Assembly Workstations
Workstations and component trolleys across the workshop.
New products and upcoming launches
- New product NEW: WJ-LI01 Large Industrial Diffuser Just launched — 5L industrial-grade reservoir, HVAC compatibility, mobile-app scent scheduling. View product →
- New product NEW: WJ-EI01 Eco-Certified Diffuser Eco-certified housing, low-VOC plastics, energy-efficient pump — pre-order now. View product →
- New product NEW: WJ-DI01 Designer Diffuser Designer diffuser with brushed-aluminium finish and RGB ambient light ring. View product →
- New product NEW: WJ-TA01 Tower Atomizer Diffuser Vertical tower-form atomizer diffuser for home & hotel lobbies; 200 mL refillable bottle with adjustable mist output. View product →
- New product NEW: WJ-HP02 Bluetooth Aroma Diffuser, 50 mL Compact 50 mL aroma diffuser with Bluetooth control, three mist levels, 2/4/8 h timers, and selectable ambient lighting. Available in black or white. View product →
- New product NEW: WJ-UA01 USB Atomizer Diffuser Compact 100 mL scent diffuser with USB input and 2 mist modes; covers up to 30 m³ in source rating. View product →
OEM, ODM and wholesale procurement
Centi runs both OEM (Original Equipment Manufacturer) and ODM (Original Design Manufacturer) programmes for international distributors, hotel chains, scent-marketing agencies and brand buyers. In OEM mode Centi builds a scent diffuser machine to the buyer's specification — casing colour, finish, packaging design, firmware feature scope. In ODM mode Centi adapts an existing catalogue design — adding Bluetooth, changing the casing finish, 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. MOQ is negotiated per finish and per artwork; lead time for OEM finishes is typically 30 to 45 days after artwork sign-off. Centi sales returns the full OEM/ODM checklist, per-project unit cost and freight quote with the formal quote document.
For multi-site deployments the OEM programme includes pre-configuration of each unit to the property's time-window pattern so the field engineer only needs to plug in and refill. Centi supports chain-property customers with scheduled refill programmes, on-site maintenance schedules and brand-consistent cabinet finishes across every property.