J-Rich Engineering
With over 20 years of experience in comprehensive building and factory engineering systems, covering ductwork, VRV/VRF air conditioning, electrical systems, PPR piping, and fire protection systems. Our team of experts is dedicated to the highest standards of safety, precision, and quality in every project.
We grow through trust and proven quality.
J-Rich Engineering Co., Ltd. was founded in 2009 by Mr. Watchara Joithongmool with a clear vision to elevate the standards of engineering system installations in Thailand. We place strong emphasis on quality, safety, and precision in every stage of our work.
Our services cover electrical, mechanical, and air-conditioning systems, delivered by a team of highly skilled engineers and technicians with over 20 years of experience. We serve a wide range of projects, including large-scale industrial facilities, office buildings, shopping malls, hotels, hospitals, and government projects.
Driven by our commitment to excellence, we ensure every project is completed to the highest standards, delivered on time, and tailored to meet each client’s specific needs.
"Our Key Strengths"
Quality of Work
We adhere to the highest installation standards at every stage, using premium materials and performing comprehensive system tests before handover—ensuring safety, functionality, and impeccable appearance in every detail.
Our Expertise
Our team consists of seasoned professionals with extensive field experience, specializing in electrical, mechanical, air-conditioning, and building safety systems. With over 20 years of expertise, we deliver solutions you can trust.
Full-Service Solutions
We provide complete support—from consultation and system design to installation, testing, and warranty—ensuring our clients are cared for every step of the way. On-site assessments and system design are offered with no hidden fees.
Fast and Punctual
Punctuality is central to our work ethic. With systematic project planning, we ensure every job is delivered on schedule, never left unfinished or delayed, and followed up closely after installation.
"Executive Team"
Mr. Watchara Joythongmoon
Managing Director (MD)
Mr. Watchara is an electrical engineer with over 20 years of experience in engineering and system installation. He began his career in the field, overseeing major projects in both the automotive industry and high-rise building developments. With a strong commitment to advancing engineering standards in Thailand, he founded J-Rich Engineering Co., Ltd., placing a high priority on quality, safety, and integrity in every project undertaken.
Mr. Supawut Joythongmoon
Deputy Managing Director
Mr. Supawut is a civil engineer with extensive experience in structural works, high-rise building construction, and M&E systems across both private and government projects. His in-depth understanding of on-site operations, combined with meticulous planning, enables him to manage projects efficiently, deliver on time, and fully meet client requirements.