
ABOUT US
Since 2000, Rojanapat Engineering has specialized in the design, supply and installation of industrial filtration, water treatment and air filtration systems for a wide range of industries.
Our engineering team delivers customized and dependable solutions backed by long-term technical support to keep your operations running efficiently.
Learn MoreKNOWLEDGE CENTER
Technical insights and expertise from our filtration engineering team.

How to Select the Right Industrial Water Filtration System

Industrial Multimedia Filter: Operation and Maintenance Guide

How to Prevent Hardness Leakage from an Industrial Water Softener

Ultrafiltration vs Reverse Osmosis: Which System Should You Choose?
PRODUCT CATEGORIES
Explore our comprehensive range of industrial filtration solutions across four core categories.

Water Treatment Solutions
Comprehensive industrial water treatment solutions including RO membranes, RO systems, ion exchange resins, filtration media, specialty chemicals, and CIP cleaning solutions.

Liquid Filtration
Cartridge and bag filters for industrial liquid filtration, including string wound, spun, melt blown, pleated, and carbon cartridges.

Air & Dust Filtration
Comprehensive air filtration solutions including dust collector filter bags, air intake filters, HEPA and cleanroom filters, high-temperature filters, and spray booth filtration media for a wide range of industrial applications.

Filter Housing Solutions
Plastic, stainless steel, bag, sanitary, and PP filter housings for all industrial filtration applications.
ENGINEERING & SITE SERVICES
Professional engineering, installation, cleaning and maintenance services for industrial filtration and water treatment systems.

RO Membrane Replacement
Professional membrane replacement for reliable industrial RO system performance.

RO Membrane Cleaning
Professional cleaning to restore performance and extend membrane service life.

Filter Media Replacement
Replacement of carbon, resin, anthracite, sand and industrial filter media.

RO System Installation
Complete installation, commissioning and preparation of industrial RO systems.

Bag Filter Installation
Installation and replacement of industrial dust collector filter bags.
INDUSTRIES
Industries We Serve
Industrial Filtration Solutions
We provide filtration and water treatment solutions for a wide range of industries, supported by products and engineering services tailored to each production process.
BECOME OUR DEALER
Dealer Application
Become Our Dealer
Join the ROJANAPAT dealer network
Join our authorized dealer network for premium RO membranes and industrial RO systems from 500 LPH.
CONTACT & QUOTATION
Contact our team or continue to the full quotation form for a solution tailored to your industrial filtration requirements.
CONTACT
Contact our sales and engineering team for product information, technical consultation and after-sales support.
Contact Information
- 60/9 Moo 4, Soi Klong 4 Tawan-Ok 17, Leab Klong 4 Road, Klong 4, Klong Luang, Pathum Thani 12120, Thailand
- LINE OA: @rojanapat
- sales@rojanapatfilter.com
- Mon–Fri, 08:00–17:00
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QUOTATION
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