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Easystat

A smart WiFi thermostat with precise control, remote app access, and intuitive design for a more comfortable, energy-

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Ace 2.0 Control System

Ace 2.0 is a simple full-function, as a master controller in each room

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DDC

HD series universal programmable controller is a new generation of network DDC designed for smart building automatic control system.Through various communication interfaces to support a variety of standard mainstream

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Motorized Ball Valve

BV03 series motorized ball valve is applicable to terminal of central air conditioning system and heating system

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Solution

RECENT PROJECTS

We provide a comprehensive intelligent building and energy management solution built on strong in-house R&D capabilities, over 300 patents, and internationally certified product reliability. With fully automated smart manufacturing and TÜV-verified quality control, our hardware portfolio—from DDC controllers, sensors, gateways, and thermostats to control valves—forms a complete, highly reliable system foundation.

Hotel Building Automation Solution

Commercial building complex

Smart Laboratory Solution

Transportation and public facilities

HaiLin Industrial Park Building Energy Management Solution

Residential Community Solution

Data center

Smart Hospital Solution

About HaiLin

HVAC Automation & Building Automation Products Manufacturer

HaiLin controls has established a complete service system.At present, in China, HaiLin has more than 100 agents, and its marketing service covers more than 200 cities., exporting products to more than 60 countries including the United States, Europe, the Middle East, Australia, and South America.

25 years+ manufacturing experience
Established a global standardized system covering R&D, manufacturing, and supply chain operations
Fully automated thermostat production with an annual capacity of over 2 million units.

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Case

CUSTOMER CASE

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HaiLin EBA Energy and Building Automation System for Zhongguancun Science City Dongsheng Technology Park • Haikai Park

Project Overview Building a Digital Energy Innovation Hub for a Smart Technology Park Beijing Zhongguancun Science City AI Digital Energy Industrial Park, also known as Zhongguancun Science City Dongsheng Technology Park • Haikai Park, is a technology innovation and service-oriented industrial park focused on high-tech and high-value industries. ...

HaiLin EBA Energy and Building Automation System for Zhongguancun Science City Dongsheng Technology Park • Haikai Park

Beijing Yanqi Lake Institute of Applied Mathematics Project

Project Overview Qinhuangdao Bovi Fortune Center, with a total construction area of 53,862 square meters, is a large-scale urban complex integrating a high-end hotel, boutique retail spaces, and office buildings. To improve HVAC operating efficiency and reduce electricity costs, the project adopts an economical and energy-efficient water thermal storage system...

Beijing Yanqi Lake Institute of Applied Mathematics Project

Advantage

REASONS FOR CHOOSING US

Strong R&D and Technology Foundation

300+ global patents and fully independent core technologies CMMI Level 3 certified, with internationally advanced software capabilities Early achiever of UL, CE, BTL, RoHS and other global certifications 100% localized main chips and components for DDC controllers Global-standard system covering R&D, manufacturing, and supply chain
Intelligent Manufacturing Excellence

Industry’s first fully automated smart electronics factory National “Green Factory” certified Advanced SMT and automated assembly/testing lines Annual production capacity exceeding 2 million units TÜV Rheinland–witnessed lab with 18 testing capabilities; CPK > 1.66
Complete Product Portfolio & AI -Driven Solutions

Full range: DDC controllers, gateways, sensors, thermostats, valves Software platforms including the HAI building management system Proprietary EBA energy-control system integrating AI for optimization Delivers 15%–30% building energy savings
Proven Track Record in Landmark Projects

Solutions deployed in 2008 Beijing Olympics (17 venues) and 2022 Winter Olympics (13 venues) Key national projects: Beijing Sub-Center (650,000 m²) Xiong’an City Computing Center Beijing Daxing International Airport Verified 15%–25% energy savings in data centers, commercial complexes, and public buildings

Blog

THE LATEST NEWS

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News

On October 15, 2026

Motorized Valve: Types, Uses & FCU Selection Guide

When a room stays too warm even though the fan coil unit is running, the problem may not be the thermostat. Water flow through the coil could be part of the issue. A Motorized Valve helps control this flow automatically,...

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News

On September 22, 2026

CO₂ Sensor for HVAC: Demand Controlled Ventilation and Why Sensor Accuracy Matters

A CO₂ Sensor can help an HVAC system respond to changes in occupancy instead of running the same ventilation rate all day. Think about a meeting room that is empty for hours and then fills up within minutes. The ventilation...

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News

On September 10, 2026

Best Thermostats for Hydronic Radiant Floor Heating: A Distributor Guide

Thermostat selection is easy to get wrong in hydronic radiant floor heating. A thermostat may look suitable on the product page but still fail to match the heat source, valve, sensor, wiring, or zone control setup. For distributors, the safest...

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