1. Service Purpose

Hengdun Tech adheres to the core principle of "rapid response to needs and attentive follow-up throughout". For the full range of explosion-proof tools, industrial sensors and industrial video surveillance products, we provide customers in mining, oil & gas, chemical, infrastructure and hazardous engineering industries with integrated services covering pre-sales technical support, installation guidance during sales and lifetime technical support after sales, ensuring stable and compliant operation of equipment in high-risk industrial scenarios.

2. Comprehensive After-sales Service

1. Online Instant Consultation

The "Chat With Us" online customer service at the bottom right of the website can answer questions about product selection, installation & commissioning, troubleshooting and accessory procurement.

2. Remote Technical Guidance

For problems such as tool power failure, sensor signal deviation, image abnormality and communication faults, technical engineers provide remote video guidance for inspection and quickly locate faults, minimizing customer downtime losses.

3. On-site Service

For bulk explosion-proof tool projects and large complete explosion-proof surveillance systems, engineers are dispatched on-site within 48 hours in the Jiangsu-Zhejiang-Shanghai region; for other regions nationwide, the on-site service cycle is agreed upon, providing on-site disassembly and repair, whole-machine calibration and explosion-proof compliance inspection services.

4. Genuine Parts Supply

We maintain long-term stock of all original spare parts, supporting individual part retail and bulk project shipment. After-sales parts come from the same source as the complete machines, ensuring explosion-proof safety standards are not downgraded.

5. Customized Maintenance Solutions

For long-term cooperative customers in mines, oil fields and chemical parks, annual operation & maintenance agreements can be signed, including regular equipment inspection, explosion-proof performance re-inspection, equipment maintenance, standby machine replacement, and dedicated upgrade and modification services.

3. After-sales Contact Channels

After an equipment failure, after-sales support can be requested through the following channels:

1. Online: the "Chat With Us" online customer service window on the website

2. Phone: 400-676-0959 (weekdays 8:00-17:00)

3. Email: contact@hengduntech.com

4. Add our WeCom to submit product information online (see image below)