Manufactured in China. Serving Japanese industrial customers with over 30 years of FRP expertise.
PROFIT DAY is headquartered in Hong Kong with manufacturing in China. We produce cooling tower parts, FRP sanitary equipment, grease traps, steel fabrication, and water treatment equipment — primarily for Japanese industrial customers, with engineering support available for international quote requests.
Manufacturing Experience
Custom manufacturing
Primary market
Build-to-order supply
FRP and steel products manufactured in our China facilities to customer drawings. Lamination, gel coat application, steel fabrication, assembly, and inspection under one integrated workflow.
6 product families Build-to-order Engineering support available
FRP cooling tower parts including fill media supports, drift eliminators, and fan-stack sections. Corrosion-resistant construction for long service in open-loop cooling systems.
Structural and functional FRP components for cooling tower assembly — distribution channels, support frames, and custom pultruded sections.
FRP sanitary equipment designed for construction sites, parks, factories and public facilities. Product range includes urinals, inspection chambers, water tanks and other custom sanitary components. Lightweight, corrosion-resistant and suitable for outdoor environments.
FRP grease traps and interceptors for commercial kitchens and industrial facilities. Lightweight, corrosion-proof alternative to concrete or steel units.
Custom steel fabrication designed to integrate with FRP products, including flanges, support frames, mounting structures, base frames and welded assemblies manufactured according to customer drawings.
FRP water treatment equipment including tanks, clarifier components, and process vessels for municipal and industrial water systems.
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FRP bathroom sideboard installed beside bathtubs for storage. Lightweight, corrosion resistant and suitable for wet environments.
Custom FRP window frames for railway vehicles. Lightweight, corrosion resistant and designed according to customer drawings.
Send a drawing. Our engineering team reviews every submission and responds as soon as possible with materials, tooling, pricing, and timeline.
PDF, STEP, DWG, or IGES — our engineering team reviews every submission.
Material spec, tooling cost, unit price, and lead time.
After review, our Hong Kong and mainland China teams provide standard RFQ guidance.
FRP offers corrosion resistance and light weight in the wet, outdoor, and sanitary environments where PROFIT DAY products are installed.
Customer drawings accepted
Suitable for wet and outdoor environments where moisture and exposure are ongoing concerns.
Easier to handle, transport, and install compared with heavier structural materials.
Components can be built to customer drawings for project-specific layouts and interfaces.
Reduces the need for recurring protective coatings in many service environments.
Wet, outdoor, and sanitary equipment environments
Made to customer drawings
FRP parts, steel parts, and assembled components
Drawing review, samples, and quotation support
PROFIT DAY manufactures FRP and steel components for cooling towers, water treatment, sanitary equipment, and OEM supply to Japanese customers.
Build-to-order manufacturing Customer drawings accepted
FRP fill supports, drift eliminators, fan-stack sections, distribution channels, and structural components.
FRP tanks, clarifier components, and process vessels for water treatment equipment.
FRP sanitary equipment, grease traps, inspection chambers, and related environmental products.
Steel flanges, support frames, base structures, and welded assemblies integrated with FRP equipment.
FRP sanitary products for construction sites, parks, factories, and public facilities.
Custom FRP and steel components manufactured to customer drawings for Japanese equipment manufacturers.
From incoming inspection and gel coat application to lamination, demolding, grinding and deburring, final inspection, and shipment, key processes are managed through one integrated workflow.
Incoming Inspection
Lamination Resin Mixing & Weighing
Glass Fiber Cutting
Gel Coat Mixing, Agitation & Filtration
Gel Coat Application
In-Process Inspection & Acceptance Decision
Lamination
Demolding
Grinding & Deburring
Assembly (When Required)
In-Process Inspection
Daily Mold Inspection
Mold Repair
Final Product Inspection
Warehousing
Pre-Shipment Inspection
Loading Confirmation
Shipment
Three decades of manufacturing for Japanese customers in cooling towers, water treatment, sanitary equipment, and OEM supply.
Tanks, vessels, and ducting for Japanese water and wastewater operators.
Sanitary and environmental products through long-term OEM partnerships in Japan.
FRP cooling tower parts and components for Japanese OEMs and plant operators.
Steel frames, flanges, and welded assemblies supplied with FRP products.
of FRP manufacturing experience
Custom build-to-order manufacturing
Primary customer base
The lamination hall uses clearly organized production stations and a continuous-flow layout, supporting traceability and quality management. Quality processes aligned with Japanese customer requirements.
PROFIT DAY
China Manufacturing Base
Zhaoqing, Guangdong, China
Production facility in China, managed to Japanese quality standards.
Manufacturing since
Managed FRP workflow
Manufacturing location
Headquarters
No. 2 Jin Road, Jinli Town, Gaoyao District, Zhaoqing City, Guangdong Province, China
Since 1995, PROFIT DAY has continuously provided OEM and custom FRP manufacturing solutions for Japanese industrial customers.
PROFIT DAY was established in Hong Kong.
The Dong Fu factory began production in China, marking the start of FRP manufacturing.
Metal fabrication capability added.
Business expansion.
Production capability expanded.
Long-term partnership with Shimoda Ecotech.
Production scale increased.
Partnerships with Fuji Clean and Tono Kasei.
New management leadership.
The Dong Fu factory began purchasing and selling in China's domestic market.
Serving Japanese industrial customers for over 30 years while welcoming international project quote requests.
For more than three decades, PROFIT DAY has supplied FRP and steel components to Japanese manufacturers in cooling towers, water treatment, sanitary equipment, and environmental products.
Selected long-term business partners.
Representative companies shown above are examples of long-term business partners. Company names and logos remain the property of their respective owners and are displayed solely to illustrate historical business relationships.
Cooling towers, water-treatment equipment, sanitary and environmental systems, steel fabrication, and OEM supply — FRP and steel components manufactured to customer drawings.
FRP cooling-tower casings, fan-opening sections, and integrated steel components manufactured to customer drawings for cooling-tower assemblies.
Upload a drawing or specification. Our engineering team reviews every submission and will respond as soon as possible regarding materials, tooling, pricing and lead time.