Environmental operation and maintenance services:
Zhongheng'an has a professional technical team responsible for product after-sales service and operation and maintenance services. Experienced service engineers can provide quick and effective responses to every service requirement of users. We have set up a 400 technical support hotline, where senior engineers are available to answer various technical questions during system use for users at any time
Zhongheng'an actively carries out third-party operation services for online monitoring facilities of fixed pollution sources. A professional operation team, a sound operation management system, reasonable allocation of operation resources, good technical development and operation maintenance capabilities have won a good reputation among customers for the company's operation services.
Team goal: Our company adheres to the operation and maintenance principle of "prevention first, combination of prevention and control, comprehensive governance, and turning harm into benefit", and strictly follows the environmental legal management and operation established in accordance with national standards. Guided by the principles of "compliance with laws and regulations, safety management, scientific construction, and harmonious development" for operation and maintenance services
The company has established a 24/7 timely and effective service system. We solemnly promise to implement a 1-hour response for product services, arrive on-site within 24 hours, and respond to your requests 24 hours a day.
National service hotline:

The main projects of operation and maintenance work are:
1. Continuous automatic monitoring system for VOCs from fixed pollution sources
2. Fixed pollution source CEMS (SO2, NOx particulate matter) continuous automatic monitoring system for flue gas
3. Automatic monitoring station for ambient air quality, micro station

Our operation and maintenance plan:
• Products within the company:
Warranty period: Free provision of various maintenance services and spare parts.
Out of warranty period: Provide various spare parts at cost to effectively reduce the burden on the enterprise. Customers can purchase spare parts themselves, and our personnel will provide guidance through phone, video, and other means to complete the replacement work; You can also sign a maintenance agreement, and the customer will provide a certain fee. Our company will send someone to the site to solve the problem.

• External products:
The company will send engineers with rich on-site experience to the customer's site for inspection and testing work. When repairs are possible, the company will develop more economical maintenance plans to reduce the burden on the enterprise.

Our workflow:

Our capabilities:

Service Classic Case - Operation and Maintenance of Volatile Organic Compounds Online Monitoring System for Oil and Gas Recovery Device in Tank Farm of Hebei Xinxinyuan Energy Company
1. Project situation:
In 2018, our company undertook the VOC online monitoring system project of Hebei Xinxinyuan Energy Company, manufactured and provided a complete set of analysis cabins and online chromatographic analyzer HA-VOCS1000, and signed an operation and maintenance agreement with Xinxinyuan to be responsible for the operation and maintenance of the instruments.
2. Project features:
The online chromatographic analyzer has high accuracy and is composed of various equipment such as zero gas generator and hydrogen generator. Due to the harsh on-site environment, high dust and humidity, regular maintenance and calibration are required. Complex operation and maintenance, as well as diverse spare parts
3. Implementation method and content:
The customer signed a maintenance contract with us. Our company appoints experienced engineers to be stationed on site to regularly maintain and calibrate the instruments, and maintain work records to ensure stable instrument performance and normal uploading of monitoring data to the environmental protection department. To safeguard the continuous production of enterprises.

Service Classic Case - Operation and Maintenance of Volatile Organic Compounds Online Monitoring System for Oil and Gas Recovery Device in Tank Farm of Hebei Xinxinyuan Energy Company
1. Project situation:
The provision, installation, commissioning, and operation and maintenance of VOC over limit alarm devices for multiple units in Botou city and county
2. Project features:
The number of customers is large, and the factory is scattered in various districts and counties. The business scope of the enterprise is relatively wide, with a large number of instruments and a relatively harsh on-site environment.
3. Implementation method and content:
Our company dispatches 3-5 experienced technical engineers to form an operation and maintenance team, which develops corresponding operation and maintenance plans based on the customer's on-site environment, regularly provides maintenance services on site, replaces filter components, calibrates instruments, etc., ensures normal instrument monitoring, and uploads monitoring data to the environmental monitoring department in real time to ensure the safety of the customer's on-site workers and the orderly progress of production work. And we maintain close contact with customers, so that we can solve any problems as soon as possible.