Siam Compressor Industry Co., Ltd. (SCI) , a subsidiary of Mitsubishi Electric, is redefining the performance and value of compressors through innovative technologies and green solutions.
SCI's core competitiveness is rooted in sustained R&D investment, having secured multiple U.S. patents in core compressor technologies in recent years.
Representative patent achievements:
· Scroll compressor stepped suction channel: Optimizes refrigerant flow efficiency.
· Dual-cover noise reduction design: Effectively lowers compressor operating noise.
· Rotary compressor crankshaft stopper mechanism: Enhances operational stability.
· Suction valve innovative design: Improves airflow control and compression efficiency.
Smart manufacturing capabilities:
· SCI's factory in Thailand's Laem Chabang Industrial Estate has fully transitioned to smart manufacturing.
· In October 2025, SCI demonstrated its "Digitalization & Decarbonization" achievements at a Thailand Air Conditioning and Refrigeration Industry Association event, featuring smart production lines, factory automation systems, and AI- and IoT-based quality inspection systems.
SCI has adopted "a more environmentally friendly solution provider" as its core strategy, actively promoting the transition to low-GWP refrigerants.
R290 natural refrigerant deployment:
· Pioneered R&D and production of R290 compressors over a decade ago in response to European customer demand.
· Current annual output exceeds 200,000 units, accounting for 10% of total production.
· Displacement range covers 17.2cc to 130cc, including both rotary and scroll types.
· Primarily serves the European residential heat pump market, with partnerships established with 20-30 international manufacturers.
· Full product line equipped with vapor injection technology, ensuring high heating efficiency in frigid climates.

Inverter scroll compressor (AGK series):
· Delivers up to 20% energy savings compared to traditional fixed-speed systems.
· Compatible with multiple low-GWP refrigerants, including R454C and R448A.
· Suitable for medium- and low-temperature refrigeration and freezing applications.
VRF compressor solutions:
· Wide capacity range for flexible adaptation to varying load conditions.
· Intelligent oil sensor technology ensures oil circuit stability.
· Provides high-efficiency power core for multi-split air conditioning systems.
On April 1, 2026, SCI completed its brand strategic upgrade:
· Officially renamed "Mitsubishi Electric Siam Compressor Industry Co., Ltd."
· Full product line to adopt the Mitsubishi Electric brand identity
Strategic significance:
· Deepens integration with Mitsubishi Electric Group, sharing technology, channels, and brand resources.
· Leverages Mitsubishi Electric's global brand strength to penetrate high-growth markets.
· Strategically targets the data center sector, aiming to secure a position in the globally projected 100GW new data center capacity by 2030.
From patent breakthroughs to R290 green initiatives and brand transformation, SCI is steadily advancing along a path of technological innovation and sustainable green development. With over 30 years of experience and annual production capacity in the millions, this manufacturer will continue to play a vital role in the global HVAC&R industry chain.