About Us

Our Company

Samruay Engineering Co., Ltd.

We are the nation’s largest manufacturer and distributor of custom-designed air conditioning components. With over 30 years of comprehensive manufacturing experience, we offer an end-to-end solution—from initial design and mold making to plastic injection and final assembly. Our expert team ensures stringent quality control at every stage using state-of-the-art equipment, fully certified under the ISO 9001:2015 quality management system.

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Years of Success
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Team Members
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Products

Trusted by Leading Brands

Samruay Engineering’s products are tailored to meet exact customer specifications, combining modern aesthetics with uncompromised quality and international standards. We are the trusted manufacturing partner for leading air conditioning brands both domestically and worldwide.

Machinery Excellence

State-of-the-Art Manufacturing Capabilities

We leverage cutting-edge technology from world-renowned brands like Mitsubishi, Toshiba, and Jon Wai. With clamping forces ranging from 100 to 1,300 tons, our facilities are fully equipped to handle large-scale components of any complexity.

In-House Tooling & Mold Making
Our dedicated mold-making facilities support highly customized and versatile production requirements.
Plastic Injection Molding
We operate a fleet of advanced injection machines to ensure rapid turnaround times and continuous, high-volume production.
HVAC Pipe Cover Extrusion
Our dedicated extrusion lines allow us to maintain strict quality control at every stage of the manufacturing process.
Our Manufacturing Facilities
Our Warehouse Facilities
Our History

Company Milestones

1977
Founded under the name "Samruay Karnchang," we began operations by manufacturing custom plastic injection molds tailored to various client requirements.
1989
Relocated to a 600-square-meter facility in Bang Bon to expand our production capacity. We added 15 new machines, established dedicated mold-making and plastic injection departments, and shifted our primary focus to manufacturing air conditioning components.
1992
Officially registered and incorporated under our current name, Samruay Engineering Co., Ltd.
1993
Expanded operations and moved to our current 10-rai (approx. 4-acre) facility in Krathum Baen, Samut Sakhon. Production capacity was significantly increased with the addition of 35 new machines.
2000
Implemented the Thai Foundation Quality System (TFQS) and received quality certification from the National Science and Technology Development Agency. We continuously refined our quality management, ultimately achieving the globally recognized ISO 9001:2015 certification.
2003
Expanded our factory infrastructure to support growing production demands, increasing our equipment fleet to 60 machines.
2007 - Present
Acquired an additional 10 rai of land for facility expansion to support increased production and air conditioner frame assembly, driven by surging customer demand. Our machinery fleet has since grown to 71 advanced machines.
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