KEC900 Big range Portable air negative ion tester 

1.1measurement of health products, textile, dynamic friction measurement (proposed matching EST-101CH anion collector)

1.2University, Department of landscape and forestry investigation, scenic, ecological and meteorological measurements and evaluation

1.3testing center assessment and programme implementation

1.5indoor and outdoor air quality assessment test

1.6technical seminars, and publish

1.7measurement of health products, and textiles.

1.8anions, such as nano-materials testing.