Shenzhen Guanya Technology Co., Ltd. is a high-tech group company specializing in the research, development, manufacturing, and sales of high-precision moisture meters, microwave moisture meters, density meters, moisture regain detectors, water activity meters, and thermogravimetric testing machines. The group company has been investing in and committed to the research and development of high-end precision equipment since 1998. Currently, it has applied for 45 patents and has authorized more than 20 technical patents. The company participated in drafting the JJG (Guangdong) 052-2017 metrological verification regulations for water activity meters