24
2020-03
2005
Zhuzhou Zhonghang Technology Development Co., Ltd. was established in February, 2005.
2020-03-24
2006
Our engineers were the first ones in our industry to developed ZA21 two-wire eddy current displacement sensor/transducer and ZA series super-high-temp. eddy current sensor and ZA-H2 series two-wire integrated vibration velocity sensor in March,2006.
Our engineers were the first ones in our industry to solve the interchangeability of probes and proximitors in July, 2006.
03
2019-09
Our engineers successfully developed ZA-TJ series eddy current pipe diameter measuring sensor in September, 2006.
2019-09-03
In July, 2006, our engineers were the first ones in our industry to make a breakthrough in the philosophy of eddy current and raise the measuring range of sensor to almost the diameter of probe head.
2007
The ISO9001 international quality system certificate was awarded in Dec. ,2007.