GUANGZHOU DONGRU ELECTRONIC TECHNOLOGY CO., LTD. (Dongru-Tech) designs and supplies industrial inspection and measurement instruments for coating thickness, ultrasonic thickness, light transmittance, gloss, and haze measurement.
What we do
We focus on handheld and portable instruments used in quality control, production inspection, and field assessment. Our product range covers five measurement methods aligned to specific material and application requirements.
- Coating thickness measurement (magnetic and eddy current)
- Ultrasonic wall thickness inspection
- Light transmittance and haze testing
- Gloss and surface finish measurement
How we work
Every product in our catalog is supported by structured specification data, application notes, and selection guidance. We work with distributors, inspection agencies, and production teams who need reliable instruments backed by clear documentation.
Product integrity
Our website lists only current, actively supported models. Each product record includes verified specification fields that can be compared across instruments. Discontinued and legacy models are excluded from the catalog to ensure the information you rely on is up to date.
About the company
Guangzhou Dongru Electronic Technology Co., Ltd. was established in 2010 and is a professional manufacturer of precision testing instruments that integrates research and development, design, production, sales, and service. Our product range covers coating thickness gauges, ultrasonic thickness gauges, transmittance meters, gloss meters, and haze meters, with a complete lineup of models to meet varied application needs.
Manufacturing & R&D
We operate our own manufacturing facility with five production lines and offer OEM services, supported by an in-house R&D team of 5-10 engineers. Annual output value is in the range of US$1-2.5 million.
Quality & certifications
Our products are developed under an independent R&D and intellectual-property program. The line has passed EU CE certification; selected models also carry ROHS compliance and design patents (coating and ultrasonic thickness gauges). We hold metrology certificates and the Guangdong High-Tech Product Certificate.
- EU CE certification
- ROHS compliance (selected models)
- Design patents for coating and ultrasonic thickness gauges
- Metrology certificates
- Guangdong High-Tech Product Certificate
Global trade & exhibitions
We supply customers across domestic China (90% of revenue) as well as the Middle East and Central America. Our trade team handles English and Chinese inquiries with an average lead time of 10 days and a response time within 2 hours. We exhibit at industry trade shows, including the 2021 Surface Treatment, Electroplating & Coatings Industry Exhibition (September 27-29, 2021).
Founded: 2010
Headquarters: Guangzhou, China
Employees: 11-50
Business type: Manufacturer & Trading
Main markets: Domestic 90% / Mid East 6% / Central America 2%
Response time: ≤2h
Our company
