--- title: "Donglin Controls — PLC Control Cabinets & Industrial Automation" description: "PLC control cabinets, HMI systems, VFD panels and water-treatment automation — designed, built and commissioned in Tianjin, China." canonical: https://efmc-automation.com/en language: en --- ![Sensor-activated spray-cooling retrofit in a commercial dairy barn](/api/media/file/hero-dairy-barn.webp) Case Study # Dairy Farm Sensor-Activated Spray System A commercial dairy needed to move beyond row-level spraying. We engineered a stall-level control system that detects cow presence and activates only the corresponding spray position. [View Case Study](/en/cases/precision-spray-cooling-dairy-retrofit)[Request a Quote](#contact) ![AI camera directing targeted spray cooling to an occupied cow position in a dairy barn](/api/media/file/hero-ai-vision-spraying-v2.webp) Case Study # AI Vision Spraying We upgraded sensor-activated dairy cooling into a vision-led decision system — so the control layer can tell a cow from a person before opening the corresponding spray valve. [View Case Study](/en/cases/ai-vision-precision-spraying-dairy)[Request a Quote](#contact) ![](/api/media/file/a_crisp_industrial_laboratory_automation_workbenc_1.webp) Case Study # Traceable motor testing An automated test and data-handling system links each automotive seat motor to its scanned identity, acquires test data through PLC control, stores the complete record locally and sends the final result to the customer’s MES. [View Case Study](/en/cases/automotive-seat-motor-test-traceability)[Request a Quote](#contact) ![Completed cooling-water treatment workshop for an AI data center](/api/media/file/%E5%AE%8C%E5%B7%A5%E7%85%A7%E7%89%87-%E8%BD%A6%E9%97%B41.webp) Case Study # Cooling Water Treatment Starting with the client’s outlet-water requirements, EFMC coordinated process engineering, electrical automation, civil and piping works, data-center-side interfaces, construction and commissioning as one turnkey cooling-water treatment project. [View Case Study](/en/cases/ai-data-center-cooling-water-treatment-turnkey)[Request a Quote](#contact) 2016 Established 30+ Engineers 5 Industries served What we do ## Four engineering divisions, one integrated delivery. 01 ### Software Development SCADA, MES integration, and custom industrial software tailored to your process. 02 ### Electrical Engineering Panel design, schematics, and low-voltage distribution to IEC standards. 03 ### Automation Control PLC programming, motion control, and turnkey control-cabinet manufacturing. 04 ### AI & Network Engineering Industrial networking, edge computing, and AI-assisted process optimization. Company Advantage ## Why customers specify Donglin INTEGRATED SOLUTIONS ### Software-Hardware Synergy - ●PLC/HMI/SCADA programming & commissioning - ●AI-enabled edge computing (NVIDIA Jetson) - ●Industrial cloud integration (OPC UA/MQTT) Achieves 30% communication load reduction via AI optimization OEM/ODM SERVICES ### End-to-End Customization - ●**HARDWARE** IP66-rated control cabinets & modular layouts - ●**SOFTWARE** White-label HMI interfaces & IIoT expansions Global logistics supported by 160+ patents MIL-SPEC QC ### Rigorous Quality Fortress - ●Component aging tests (MIL-STD-883G) - ●Control cabinet IP validation (IEC 60529) - ●72hr load simulation (GB/T 2423.1) ±0.01mm precision machining records 24/7 GLOBAL SUPPORT ### Uninterrupted Service Commitment - ●Remote diagnostics & firmware updates - ●On-site engineers (APAC/EU/NA) - ●Air-shipped replacements ≤24hr Shared fault code database (300+ cases) Featured products ## Control systems built with genuine ABB & Schneider components. [Talk to an engineer →](#contact) [![Siemens S7-1200 PLC Control Cabinet (1)](/api/media/file/01-7-640x480.webp)](/en/products/siemens-s7-1200-plc-control-cabinet) ### [Siemens S7-1200 PLC Control Cabinet](/en/products/siemens-s7-1200-plc-control-cabinet) Custom-built control cabinets around the Siemens S7-1200 platform, wired, programmed and factory-tested to your process specification. [Request a Quote →](/en#contact) [![Siemens ET200SP / S7-1500 PLC Cabinet (1)](/api/media/file/01-6-640x480.webp)](/en/products/siemens-et200sp-s7-1500-plc-cabinet) ### [Siemens ET200SP / S7-1500 PLC Cabinet](/en/products/siemens-et200sp-s7-1500-plc-cabinet) Modular I/O control systems on the S7-1500 and ET200SP platform for plant-scale automation with distributed stations. [Request a Quote →](/en#contact) [![RO / EDI / MBR Water Treatment Control Panel (1)](/api/media/file/01-5-640x480.webp)](/en/products/ro-edi-mbr-water-treatment-control-panel) ### [RO / EDI / MBR Water Treatment Control Panel](/en/products/ro-edi-mbr-water-treatment-control-panel) Control panels for RO, EDI, A2O and MBR water treatment processes, with SCADA and remote monitoring. [Request a Quote →](/en#contact) [![IIoT PLC Cloud Monitoring System (1)](/api/media/file/01-1-640x480.webp)](/en/products/iiot-plc-cloud-monitoring-system) ### [IIoT PLC Cloud Monitoring System](/en/products/iiot-plc-cloud-monitoring-system) Remote monitoring of PLC-controlled plant from phone or browser, with historical data and alarm push. [Request a Quote →](/en#contact) Why Donglin ## Engineered. Tested. Accountable. Tianjin Donglin Zhongkong Automation Technology Co., Ltd. designs and builds industrial control systems with genuine ABB and Schneider Electric components — every cabinet factory-tested before shipment, handed over with complete drawings and documentation. ABB Schneider Electric 2016 Founded in Tianjin 30+ In-house engineers 4 Engineering divisions 11 Product lines Industries ## Automation for the sectors that run the world. [ ![Agricultural Innovation](/api/media/file/%E5%B0%81%E9%9D%A2-10-640x480.webp) Agriculture & Livestock Environmental control · Monitoring · Dosing ](#contact)[ ![New Energy Development](/api/media/file/%E5%B0%81%E9%9D%A2-9-640x480.webp) Energy PV · Wind · Storage · Distribution ](#contact)[ ![Smart Water Management](/api/media/file/%E5%B0%81%E9%9D%A2-8-640x480.webp) Water Treatment RO · EDI · MBR · Pump stations ](#contact)[ ![Machinery & Machine Tools](/api/media/file/%E5%B0%81%E9%9D%A2-12-640x480.webp) Machinery & Machine Tools OEM panels · Retrofits · Motion control ](#contact)[ ![Advanced Manufacturing](/api/media/file/%E5%BE%AE%E4%BF%A1%E5%9B%BE%E7%89%87_20250529172102-1-640x480.webp) Industrial Automation Production lines · MES interface · Smart warehousing ](#contact)[ ![Instrumentation & Metering](/api/media/file/%E5%B0%81%E9%9D%A21-640x480.webp) Instrumentation & Metering Signal conditioning · Data acquisition · HMI ](#contact) ## Tell us about your project. Send your requirements — drawings, I/O lists, or just an idea. An engineer replies within one business day. [Chat on WhatsApp](https://wa.me/8618222008653) ![](/api/media/file/qr-wechat.webp) WeChat ![](/api/media/file/qr-whatsapp.webp) WhatsApp Email18222008653@163.com Phone+86 18222008653 Location50 Meters Of Jinwen Highway In Beiyang Industrial Zone, Tianjin, China Request a Quote Send Inquiry