Production Process & Quality Control - Shanghai Qusden Household Products Co., Ltd.
Manufacturing Expertise

Production Process & Quality Assurance

Precision Craftsmanship, Automated Machinery, and ISO 9001 Reliability Testing.

End-To-End Workflows

11 Key Steps of Our Production Craftsmanship

At Shanghai Qusden Household Products Co., Ltd., we manage every stage of home fragrance manufacturing under one roof—ensuring strict consistency, luxury aesthetics, and seamless OEM/ODM fulfillment for global buyers.

Spraying process for candle glass jars and diffuser bottles
Step 01

Spraying

Eco-friendly coating and precise custom glass color application for premium matte, glossy, or gradient finishes.

Screen Printing on glass home fragrance containers
Step 02

Screen Printing

High-resolution direct vessel silk-screen printing for crisp brand logos, intricate patterns, and clear artwork.

Gold Stamping process for luxury home fragrance labels and boxes
Step 03

Gold Stamping

Hot foil stamping in gold, silver, or metallic tones to deliver an elevated luxury packaging aesthetic.

Fragrance and soy wax mixing
Step 04

Mixing

Temperature-controlled blending of non-toxic natural soy wax and IFRA-compliant fragrance oils.

Wax and liquid filling line
Step 05

Filling

Automated liquid and hot wax pouring lines optimized to guarantee uniform top surfaces and zero shrinkage.

Precision weight checking during candle production
Step 06

Weighting

Digital precision weighing checks on every batch to maintain exact oil dosage and net weight standard.

Private label branding and application
Step 07

Labeling

Accurate semi-automated label placement supporting custom finishes, barcode tracking, and CLP safety guidelines.

Paper cutting for custom rigid gift boxes
Step 08

Paper Cutting

Clean industrial paper and cardboard cutting for custom luxury rigid gift boxes and protective inserts.

Creasing machine for paper packaging
Step 09

Creasing

Precision cardboard creasing for seamless box structures, sharp corners, and high structural integrity.

Boxing folding and forming for gift sets
Step 10

Boxing Folding & Forming

In-house forming and folding of premium presentation boxes for candle gift sets and diffuser collections.

Assembly and export packaging line
Step 11

Assembly & Packaging

Final manual assembly, thorough clean-up, protective bubble wrapping, and sturdy export carton packing.

Advanced Facility Infrastructure

Specialized Machinery & Automated Production Lines

Shanghai Qusden Household Products Co., Ltd. continuously invests in modern manufacturing machinery to boost efficiency, shorten lead times, and maintain superior consistency for large volume orders.

Automated spraying line
Equipment Line 01

Spraying Line

Automated continuous conveyor spraying system ensuring evenly distributed surface colors on glass containers.

High speed Screen Printing machine
Equipment Line 02

Screen Printing Machine

Precision cylindrical screen printer for fast multi-color logo application on jars and perfume bottles.

Pneumatic Gold Stamping machine
Equipment Line 03

Gold Stamping Machine

Industrial hot stamping equipment delivering flawless foil transfer onto luxury paper and glass surfaces.

Industrial fragrance mixer tank
Equipment Line 04

Mixer

Large-capacity stainless steel mixing tanks with temperature sensors for homogenous wax oil blending.

Automated Filling line for home fragrance
Equipment Line 05

Filling Line

Multi-nozzle automatic liquid filling line for high-speed candle wax pouring and reed diffuser oil bottling.

Volatile Liquid Filling Machine for diffuser oil and sprays
Equipment Line 06

Volatile Liquid Filling Machine

Sealed anti-evaporation filling unit designed for essential oil mixes, room sprays, and volatile diffuser solvents.

High speed labeling line
Equipment Line 07

Labeling Line

Automated adhesive labeling system delivering crease-free wrap-around label application on all vessel types.

Paper Cutting machine for gift box materials
Equipment Line 08

Paper Cutting Machine

Heavy-duty hydraulic paper cutter for precise sizing of face papers, greyboards, and box sleeves.

Creasing machine for rigid packaging
Equipment Line 09

Creasing Machine

High-precision paperboard creasing line providing smooth fold edges for custom branded gift boxes.

Boxing folding and forming line
Equipment Line 10

Boxing Folding & Forming Line

Automatic rigid box forming line capable of constructing magnetic closure boxes, lid-and-base boxes, and sleeves.

Assembly and packaging line
Equipment Line 11

Assembly & Packaging Line

Streamlined assembly station where fragrance items, reeds, wicks, and collateral are packaged for global shipping.

Zero Defect Commitment

Strict Quality Testing & Reliability Assurance

Fragrance products face strict safety and transit challenges. Shanghai Qusden Household Products Co., Ltd. conducts comprehensive in-line inspections and laboratory environmental testing to guarantee products arrive in pristine condition.

Online inspection during home fragrance assembly
QC Standard 01

Online Inspection

100% real-time visual and weight inspection along active packaging lines to stop defects immediately.

Vacuum Drying Oven for candle stability test
QC Standard 02

Vacuum Drying Oven

Accelerated heat and vacuum testing to verify oil stability, vessel sealing, and wax sweat resistance.

Transportation Vibration Testing Machine for sea and air freight simulation
QC Standard 03

Transportation Vibration Testing

Simulates rough ocean and road transport conditions to validate carton strength and bottle anti-leakage caps.

Constant Temperature and Humidity Incubator
QC Standard 04

Constant Temp & Humidity Incubator

Extreme climate testing to ensure formula performance remains stable across cold winters and humid summers.

Laboratory Vacuum Drying Oven for export safety
QC Standard 05

Formula Integrity Test

Secondary high-pressure testing guaranteeing fragrance throw retention and zero leakage during air cargo transit.

Verified OEM/ODM Partner

Ready to Scale Your Home Fragrance Brand?

Partner with Shanghai Qusden Household Products Co., Ltd. for custom soy wax candles, reed diffusers, and luxury gift sets. Contact our team to request product specifications, samples, or factory audit reports.