Shenzhen Hongyan Technology Co.,Ltd, founded in 2003, is a company specializing all kinds of digital instruments -- Laser tachometer, grain moisture meter, stroboscope, lux wood sound level temperature anemometer, infrared coating thickness tester, distance measuring surface ...

We, Hengkaituo instrument, was founded in 2003, located Shenzhen, Guangdong, which is a professional and reliable air quality instrument manufacturer exporter. The product scope covers including monitor, purifier,aroma diffuser & humidifier. All our products are compliant to the global ...