Quality Control

Product Certification

Uma Certificate-EMC

CE Certificate

Uma Certificate-ROHS

RoHS Certificate

FCC Certificate

Uma Certificate-MSDS

MSDS Report

Exquisite Manufacturing Craft​

Quality is our life and we treat each product as artwork 

quality control-PCBA

Product PCBA SMT Working Process

quality control-Test

Product Function and Electronic Test Process

a shelf with many aroma diffusers under aging test

Product Aging Test Before Packing

Quality Assurance Flow Chart

quality control-flow chart


Uma Electronic Technology  specializes in manufacturing and designing of ultrasonic aroma diffuser, we are committed to provide realiable quality product at affordable price. 


Add: No. 2013, South Building, Yinzhou Chamber Of Commerce, Ningbo, China
Tel: +86-574-56113933
Fax: +86-574-56113944
Email: info@umatech.cn