About Us

Yuan-ho Harmony Co. Ltd. began in 1997, led to the development of all manner of hand held electronic products, has a number of patented products, Infrared Themometer was an early invention and this was followed by hygrometer, skin checker, UV calculated meter and so on... more

sunglasses & UV meter experiment error that shows some complications of the test (1st run...unused)

this was my first attempt at making this video. the results had some discrepancies in the middle of the test, so i...more

UV meter & scanner unboxing, review, & experiment for sunglass safety.

unboxing & review of "UV hawk 2" UV meter & "zadro" nano-UV disinfection light scanner...more