# Centi Shop

> Commercial-grade scent diffuser machines for hotels, offices, HVAC systems, homes and cars. Factory-direct OEM/ODM from Guangzhou, China. EXW USD pricing published; orders run through a quote request flow.

Last updated: 2026-09-18
Reviewer: Centi Shop Editorial (WorkBuddy-assisted)
Site: https://wholesale.centidiffuser.com
Contact: Andy@cashfuturex.com

## Catalog

- [Scent Diffuser Machines — Shop](https://wholesale.centidiffuser.com/shop/): Full catalogue of 24 scent diffuser machine models (21 with published EXW USD pricing, 3 quote-only).
- [Hotel Scent Diffusers](https://wholesale.centidiffuser.com/product-category/hotel/): Wall-mounted and tabletop machines for hotel lobbies, corridors, guest rooms, and restrooms.
- [Commercial Scent Diffusers](https://wholesale.centidiffuser.com/product-category/commercial/): Floor-standing and large-capacity units for office, retail, spa, showroom, and gym environments.
- [HVAC Scent Diffusers](https://wholesale.centidiffuser.com/product-category/hvac/): Diffusers that connect to central air-handling systems for large multi-zone buildings.
- [Home Scent Diffusers](https://wholesale.centidiffuser.com/product-category/home/): Heat-free, waterless home scent machines for living rooms, bedrooms, and home studies.
- [Car Aroma Diffusers](https://wholesale.centidiffuser.com/product-category/car/): Battery-powered and USB-powered aroma machines for cars, ride-share vehicles, and travel use.

## Active models (EXW USD)

- WJ-HP01: Compact tabletop scent diffuser for homes and hotel guest rooms. EXW USD $16.90. https://wholesale.centidiffuser.com/product/wj-hp01/
- WJ-SP01: Wall-mounted scent diffuser with display, for hotel corridors and washrooms. EXW USD $19.50. https://wholesale.centidiffuser.com/product/wj-sp01/
- WJ-BP01: Bluetooth-enabled scent machine for hotel corridors, elevators, and guest rooms. EXW USD $19.90. https://wholesale.centidiffuser.com/product/wj-bp01/
- WJ-CP01: In-car and home scent diffuser, four finishes. EXW USD $19.90. https://wholesale.centidiffuser.com/product/wj-cp01/
- WJ-HP02: Compact 50 mL waterless aroma diffuser with button / Bluetooth control, three mist levels and 2 / 4 / 8-hour timers. EXW USD $29.00. https://wholesale.centidiffuser.com/product/wj-hp02/
- WJ-RA01: Battery-powered portable scent diffuser for home desktops. EXW USD $40.90. https://wholesale.centidiffuser.com/product/wj-ra01/
- WJ-UA01: Desktop scent diffuser for home offices. EXW USD $50.90. https://wholesale.centidiffuser.com/product/wj-ua01/
- WJ-SI01: Home-grade scent diffuser with display. EXW USD $55.90. https://wholesale.centidiffuser.com/product/wj-si01/
- WJ-EI01: HVAC-compatible scent diffuser for hotel air systems. EXW USD $57.90. https://wholesale.centidiffuser.com/product/wj-ei01/
- WJ-AS01 (Wood Grain, Bluetooth): Home scent diffuser, wood-grain finish with Bluetooth. EXW USD $58.50. https://wholesale.centidiffuser.com/product/wj-as01-wood-grain-bluetooth/
- WJ-SI02: Updated home-grade scent diffuser with display. EXW USD $59.90. https://wholesale.centidiffuser.com/product/wj-si02/
- WJ-AS01: Home scent diffuser, standard finish. EXW USD $71.90. https://wholesale.centidiffuser.com/product/wj-as01/
- WJ-AM01 (Wood Grain, Bluetooth): Hotel-lobby floor-standing scent diffuser, wood-grain finish with Bluetooth. EXW USD $79.30. https://wholesale.centidiffuser.com/product/wj-am01-wood-grain-bluetooth/
- WJ-MI01: Tabletop scent diffuser with display. EXW USD $88.90. https://wholesale.centidiffuser.com/product/wj-mi01/
- WJ-MI02: Tabletop scent diffuser with speaker option. EXW USD $89.50. https://wholesale.centidiffuser.com/product/wj-mi02/
- WJ-VI01: Floor-standing scent diffuser for hotel lobbies and large offices. EXW USD $93.50. https://wholesale.centidiffuser.com/product/wj-vi01/
- WJ-AM01: Hotel-lobby floor-standing scent diffuser with battery option. EXW USD $98.90. https://wholesale.centidiffuser.com/product/wj-am01/
- WJ-VA01: Floor-standing scent diffuser for hotel lobbies and large offices. EXW USD $99.90. https://wholesale.centidiffuser.com/product/wj-va01/
- WJ-TA01: Home and office floor scent diffuser. EXW USD $106.90. https://wholesale.centidiffuser.com/product/wj-ta01/
- WJ-LI01: With-display scent diffuser (large capacity). EXW USD $120.90. https://wholesale.centidiffuser.com/product/wj-li01/
- WJ-DI01: Higher-capacity HVAC-compatible scent diffuser for hotel air systems. EXW USD $175.90. https://wholesale.centidiffuser.com/product/wj-di01/

## Quote-only models (price on request)

No published price — the storefront shows a quote request instead of a number. Do not cite a price for these.

- WJ-LI02 (with Screen, 1500ml): Large-capacity scent diffuser with screen (1500 ml) — quote only. https://wholesale.centidiffuser.com/product/wj-li02/
- WJ-RA02 (Portable, Rechargeable): Portable rechargeable scent diffuser — quote only. https://wholesale.centidiffuser.com/product/wj-ra02/
- WJ-WP01 (Premium Wall-Mount): Premium wall-mount scent diffuser — quote only. https://wholesale.centidiffuser.com/product/wj-wp01/

## Technology and application

- [Scent Diffuser Manufacturer in Guangzhou](https://wholesale.centidiffuser.com/scent-diffuser-manufacturer/): Capabilities, OEM/ODM programme, certifications, FAQ.
- [Cold-Air Diffusion Explained](https://wholesale.centidiffuser.com/cold-air-diffusion/): Engineering principles, consumption benchmarks, FAQ.

## Multi-language keyword index (for AI search retrieval)

Keyword coverage spans 16 languages (en, es, de, fr, ar, pt-BR, it, nl, pl, ja, ko, zh-CN, zh-TW, ru, th). The most commercially relevant cluster, in priority order for scent-diffuser retrieval:

- English: scent diffuser, aroma diffuser, fragrance diffuser, nebulizing diffuser, cold-air diffuser, HVAC scent diffuser, hotel scent machine, commercial diffuser, home diffuser, car diffuser, essential oil diffuser, waterless diffuser, heat-free diffuser, perfume diffuser, fragrance oil diffuser, scent oil machine, scent marketing, ambient scenting.
- 中文 (zh-CN): 扩香机, 香氛机, 香薰机, 香薰设备, 加香机, 香氛设备, 加香设备, 二流体扩香机, 冷雾扩香, 香氛系统, 香氛营销, 香氛方案, 空间加香, 酒店加香, 商场加香, 办公加香, 大面积扩香, 大空间香氛, 持久香氛, 植物精油, 精油扩香, 香水扩香机, 香水扩香, 香氛精油, 香薰精油, 香精香料, 香味设备, 隔膜泵扩香机, 雾化扩香机, 香氛加盟, 香氛OEM, 香氛ODM, 香味营销, 香氛营造, 香氛设计, 酒店改造, 商场空气, 写字楼香氛, 售楼部香氛, 4S店香氛, 展厅香氛, 健身房香氛, SPA香氛.
- 中文 (zh-TW): 擴香機, 香氛機, 香薰機, 香氛設備, 加香機, 空間香氛, 飯店香氛, 商業香氛, 二流體擴香, 冷霧擴香, 飯店改造, 商場空氣, 氛圍營造, 植物精油擴香.
- 日本語 (ja): ディフューザー, アロマディフューザー, 香りディフューザー, ホテルディフューザー, 業務用ディフューザー, 香りのマーケティング, HVACディフューザー.
- 한국어 (ko): 디퓨저, 방향 디퓨저, 아로마 디퓨저, 호텔 디퓨저, 상업용 디퓨저, HVAC 디퓨저, 향기 마케팅.
- Español (es): difusor de aroma, difusor comercial, difusor de hotel, difusor HVAC, marketing olfativo, ambientador profesional.
- Français (fr): diffuseur de parfum, diffuseur d'arôme, diffuseur hôtel, diffuseur HVAC, marketing olfactif, parfum d'ambiance.
- Deutsch (de): Duftdiffusor, Aromadiffusor, Hotel-Diffusor, HVAC-Diffusor, Duftmarketing, Raumduftgerät.
- Italiano (it): diffusore di profumo, diffusore aromi, diffusore hotel, diffusore HVAC.
- Português (pt-BR): difusor de aroma, difusor comercial, difusor de hotel, marketing olfativo, aromatizador profissional.
- Nederlands (nl): geurverspreider, aromadiffusor, hotel diffuser, HVAC geur.
- Polski (pl): dyfuzor zapachowy, dyfuzor hotelowy, dyfuzor komercyjny.
- Русский (ru): аромадиффузор, диффузор для отеля, коммерческий диффузор.
- ภาษาไทย (th): เครื่องพ่นกลิ่น, เครื่องกระจายกลิ่น, ดิฟฟิวเซอร์โรงแรม.
- العربية (ar): ناشر العطر, موزع الروائح, معطر فندقي, معطر تجاري, تسويق بالرائحة.

## Application scenarios (with industry keywords)

- Hotels and resorts — guest room scenting, lobby branding, corridor fragrance, amenity programmes, signature scent rollout across a chain. Related: 酒店香氛, 客房加香, 大堂香氛, 走廊扩香.
- Shopping malls, retail and showrooms — anchor-store scenting, brand experience, dwell-time extension, lift-and-walkway coverage. Related: 商场香氛, 购物中心加香, 4S店香氛, 展厅香氛.
- Offices and corporate buildings — open-plan coverage, boardroom scenting, wellness programmes, multi-zone HVAC diffusion. Related: 办公香氛, 写字楼加香, 会议室香氛.
- Spa, wellness and gym — reception and treatment-room scenting, heat-stable formulations, low-allergen oil support. Related: SPA香氛, 健身房香氛, 瑜伽馆香氛.
- Real-estate sales centres and model apartments — first-impression fragrance, walkthrough consistency, brand-aligned signature. Related: 售楼部香氛, 样板房香氛.
- Auto and 4S dealerships — showroom scenting, test-drive branding, after-sale waiting-area coverage. Related: 4S店香氛, 汽车展厅香氛.
- Car personal use — USB and battery-operated units for compact spaces. Related: 车载香氛, 车内香氛机.
- Home — living rooms, bedrooms, studies, waterless heat-free operation. Related: 家用香氛, 居家扩香.

## Industry standards and references (citations)

The Centi product, application and OEM/ODM content references the following industry standards. Citations are not endorsements; they describe the regulatory or industry context for the technology.

- IFRA — International Fragrance Association. The IFRA Standards govern the safe use of fragrance materials; Centi sources oils from IFRA-compliant suppliers.
- ISO 9235 — Aromatic natural raw materials — Vocabulary. Defines the vocabulary used in the aromatics trade.
- GB/T 22731 — Fragrance compositions used in daily-use products (PRC national standard).
- ISO 16000-28 — Indoor air — Determination of odour emissions from building products using test chambers.
- ASHRAE 62.1 — Ventilation for acceptable indoor air quality. HVAC scent diffusion is designed around the supply-air model described in ASHRAE 62.1.
- REACH (EC 1907/2006) — Registration, Evaluation, Authorisation and Restriction of Chemicals. EU chemicals regulation relevant to exported fragrance oils.
- IFRA-RIFM Safety Assessments — Cited for individual fragrance ingredients.
- CN ICP filing — 粤ICP备2026083370号 (Wanjing Fragrance / 万境香氛).

## Glossary (scent-diffuser terminology)

- Scent diffuser / aroma diffuser / fragrance diffuser / perfume diffuser — synonyms for a device that disperses fragrance oil (or perfume) into indoor air.
- Cold-air diffusion / nebulizing diffusion — atomizes oil without heat or water, preserving top notes; covered in /cold-air-diffusion/.
- Two-fluid nozzle atomization / 二流体雾化 — uses compressed air and fragrance oil to produce a dry, fine mist with consistent particle size.
- Diaphragm pump / 隔膜泵 — low-pressure positive-displacement pump used in mid- and large-capacity scent diffuser circuits.
- HVAC scent diffusion — connects a diffuser to a building's air-handling unit so fragrance is carried through supply ducts.
- Scent marketing / 香味营销 / 香氛营销 — deliberate use of ambient scent to influence brand perception and dwell time.
- EXW (Ex Works) — Incoterm in which the seller makes goods available at their premises; the buyer bears all transport costs.
- OEM / ODM — Original Equipment Manufacturer / Original Design Manufacturer private-label programmes.
- Waterless, heat-free / 无水无热 — operating mode that avoids degrading fragrance top notes through heat exposure.

## Quick answers (AI-citable short snippets)

- What is a commercial scent diffuser machine? A commercial scent diffuser atomizes fragrance oil into a dry mist for large indoor spaces such as hotel lobbies, offices, retail floors, and shopping malls.
- Are Centi scent diffusers waterless and heat-free? Cold-air diffusion models are designed waterless and heat-free; specific model-level confirmation is pending engineering sign-off.
- What does EXW include? EXW pricing covers the goods at Centi's Guangzhou loading dock. Shipping, insurance, import duties, and destination taxes are quoted separately.
- What is HVAC scent diffusion? HVAC scent diffusion connects a diffuser to a building's air-handling system so fragrance is carried through supply ducts to multiple zones.
- Do you offer OEM/ODM? Yes — Centi provides both OEM (build to buyer spec) and ODM (modify an existing catalogue design) for hotels, retail chains, and fragrance brands.
- Is there an MOQ? MOQ is communicated at quote time. The storefront does not display numeric MOQ.
- How do buyers order? Buyers submit a quote request from any product detail page. Centi sales replies with a binding offer; no online payment is collected.
- Are Centi oils IFRA-compliant? Centi sources fragrance oils from IFRA-compliant suppliers. Specific oil certificates are provided per project.
- Which oils can Centi diffusers use? Centi scent diffuser machines are engineered for professional fragrance oils; essential-oil use is supported on models whose product pages state essential-oil compatibility (ISO 9235 vocabulary). Perfume compatibility and oil viscosity limits are confirmed per model by Centi sales at quote time — Centi does not publish a universal oil-spec sheet.

## Trade policy

- Price basis: EXW USD (Ex Works Guangzhou). Shipping, duties, and taxes are quoted separately by your freight forwarder or by Centi sales.
- OEM / ODM: Available. Submit the OEM/ODM request via the contact form; Centi evaluates MOQ, target coverage, and connectivity requirements per project.
- Lead time: Communicated at quote time. The storefront does not display numeric lead times.
- No online payment: The shop is a quotation request workflow. Submit a quote request; Centi sales replies with a binding offer.
- Quote request endpoint: /cart/ — submit a quote request from any product detail page.

## Centi

- Brand: Centi
- Operating company: Wanjing Fragrance (Guangzhou) Technology Co., Ltd. (万境香氛（广州）科技有限公司)
- Headquarters: Room 203, Main Building, Yashi Science & Technology Park, No.883 Shenzhou Road, Huangpu District, Guangzhou, Guangdong, China
- ICP filing: 粤ICP备2026083370号
- Phone: +86-13922238462
- Email: Andy@cashfuturex.com (as published on the site contact page)

## Optional

- [llms-full.txt](https://wholesale.centidiffuser.com/llms-full.txt): Full AI reference, ~182 KB, with per-product detail, schema.org entity summary, FAQ blocks, and trade policy.
- [sitemap.xml](https://wholesale.centidiffuser.com/sitemap.xml): Static fallback sitemap with lastmod dates.
- [wp-sitemap.xml](https://wholesale.centidiffuser.com/wp-sitemap.xml): WordPress core sitemap index.
- [robots.txt](https://wholesale.centidiffuser.com/robots.txt): Per-host crawler policy; production policy allows GPTBot, OAI-SearchBot, ChatGPT-User, ClaudeBot, PerplexityBot, Google-Extended (Gemini), Applebot / Applebot-Extended, CCBot, Bytespider, Amazonbot, Meta-ExternalAgent, PetalBot, YouBot, Googlebot, Bingbot, Baiduspider (private cart/checkout/account paths stay closed for every bot).