TEL : +86-135-2669-2320
DOING Company is responsible to pick customers up ,hotel reservation,travel schedule arranging etc.Welcome your visit!
DOING machines get through certificates of CE,ISO,BV and oil report with some characteristic as below:
Copyright © 2015-2023.DOING Holdings - Henan Doing Environmental Protection Technology Co., Ltd | All Rights Reserved.
Some resources of our website come from the Internet and other open channels. Please contact us in time in case of infringement.