About Us
About YUJIA RAS
One Partner for Your Complete Aquaculture System
Tianjin Yujia Ecological Agriculture Technology Co., Ltd. is an agricultural technology company specializing in the research, development and industrial implementation of Recirculating Aquaculture Systems and aquaponics technologies.
We provide integrated services covering system design, equipment supply, standardized facility construction, technical operation and maintenance, as well as aquaculture production support.
Powered by recirculating aquaculture and biological symbiotic purification technologies, YUJIA develops closed-loop farming solutions designed to connect aquaculture, water purification and plant production.
- Integrated planning and system design
- Complete RAS equipment configuration
- Standardized facility construction
- Technical operation and maintenance
YUJIA integrates every critical process into one coordinated RAS solution.
Control the Critical Variables
Stable Water Quality Is the Foundation of Productive Aquaculture
Poor water quality, insufficient oxygen, disease risks and inefficient feeding can quickly affect farm performance. A properly designed RAS continuously treats and reuses water while maintaining a more stable culture environment.
Suspended solids
Unstable dissolved oxygen
Ammonia and nitrite
Pathogen risks
Inefficient feeding
Delayed equipment alarms
How the System Works
Continuous Treatment, Continuous Recirculation
Each treatment stage is configured to remove waste, stabilize water quality and return conditioned water to the culture tanks.
How the System Works
Continuous Treatment. Continuous Recirculation.
Each treatment stage is configured to remove waste, stabilize water quality and return conditioned water to the culture tanks.
60–200 μm
Microstrainer filtration range
200–280 nm
UV disinfection wavelength
>90%
Microorganism inactivation*
>99.9%
V. PARAHAEMOLYTICUS INACTIVATION*
≤5 mg/L
Designed outlet CO₂ control
24/7
System monitoring capability
Smart Aquaculture Management
Your Entire Farm, Visible from One Control Center
The YUJIA central monitoring system connects sensors, equipment controls and alarms to provide real-time visibility and more orderly farm management.
Remote equipment control
Dissolved oxygen monitoring
Automatic alarm notifications
Data trends and analysis
User permission management
Mobile and desktop access
Project Delivery
Your RAS Project, Step by Step
01 / REQUIREMENTS
Project Analysis
We review your species, capacity, water source and site conditions.
02 / ENGINEERING
System Design
We develop the treatment process, equipment configuration and layout.
03 / SUPPLY
Equipment Delivery
Core RAS equipment is prepared as a coordinated system package.
04 / START-UP
Commissioning
The system is installed, tested and adjusted for coordinated operation.
05 / SUPPORT
Operation Support
Technical guidance and maintenance support continue after start-up.
