Super-fast response

7*24 online service. Multi-channels to reach us at any time, including Facebook, WhatsApp, Skype,Whatsapp,etc. All the emails and complaints will be replied in 8h.

Customization services

The products can be specially researched, designed and processed on request. HHO? can do OEM according to customers request. You can get the test report for FREE.

One-to-one service strategy

HHO? adheres to the "one-to-one" service strategy. There will always be one staff to service for you avoiding the predicament of the multilateral communication.

Technical support

Our chief?engineer is waiting to provide you the most professional and reliable technical service online or on site. Any problem can be sent

High efficiency & short delivery time

Production will be arranged immediately after receiving the prepayments in 24 hours. The deadline of every process will be controlled strictly to guarantee the short delivery time.

Cargo tracking

Excellent service will be provided to remind each link in the whole process from the sea booking, shipping to the arrival of the products. The latest dynamic?state can also be searched on our website yourselves.

Perfect complaint management

Customer complains>HHO? provides a plan to solve the complaint>Discuss the plan>Confirm the plan and execute>Satisfaction survey. Only 5 steps is needed to deal with the complaints easily and perfectly.


HHO founder, kingkar Group R & D team leader, senior factory technician, and hydrogen energy technologies hydroxide, Engineering and Technology, China hho Society leaders, Chinese senior engineering and technical members, Changsha, Hunan