No. 16, Gaoqiang Road, Shitang Industrial Zone, Gaoqiao Town Ningbo, Zhejiang

XHnotion originate from notion between pneumatic power and human. (X stands for winds, H stands for human).In chinese, XHnotion stands for &＃39;we do, we promise&＃39; we read it &＃39;X-no...

8# Building, #9 Courtyard Dijin Rd. Haidian district

Tongdy Control Technology has designed and manufactured high quality IAQ products and HVAC controllers for 15years. Our IAQ products includes transmitters/ /controllers of carbon dioxide and carbon mo...