It is mainly in the business of research and development, production, sales of all kinds of Testing instruments and tools , It has established extensive cooperative relations with partners in Netherlands,Spain, Germany ,France, Britain, Poland, Switzerland,Italy,Ireland, Romania,Chile, Mexico, the United States,Japan,korea etc. 

At present, the factory is mainly producing and supplying of infrared carbon dioxide(CO2) monitor, negative oxygen ion detector, Ozone meter ,Dust PM2.5 monitor with TVOC and HCHO,NH3 meter , Noise meter monitor ,Radon gas analyzer,thermometer, etc. which all have passed CE, ROHS, PSE approved, distributed all over the world and has been highly recognized. 

Since its establishment , the Company has won the title of China's national high-tech enterprise and is the top quality merchant of Alibaba for years,Production scale has 3000 square meters, and with 100 employees. 

We has a strong independent research and development team, all Products are from its own private designs and have the apperance patents. It not only provides system solutions for various industries, but also provide product design and OEM services for customers . 

1. Q : What items can this tester test? 
A:  It is a multifunctional tester that can test Temperature/Humidity/Date/Time.

2. Q : What's special about this product?
A: It can be connected to your phone through wifi, you can check the real monitoring result of the device on Tuya APP on your phone. Besides, you can view the historical test record curve of the past period of time on the device.

3. Q : How to connect the device with cellphone?
A: This operation is very simple, just follow the steps of the manual, you can easily connect, suitable for all smart phones.
 
4. Q : What is the standard range for detector? 
A: Temperature ( -10-50ºC ) ( 14-122ºF ) / Humidity ( 20-85% )
 
5.  Q : How to charge it? 
A: Mini  USB port  charging line which is included in the standard  accessories. 
     We also offer adapter(Like US adapter, Europe adapter...) if  add extra cost. 
 
6.  Q : How about OEM or custom? 
A: Sure, As professional and stable manufacture for manufacture factory, we can support many custom contents as below; 
Printing logo on product . 
Package, support custom pacakge. (We can send neutral artwork to client to design package) 
Manual, support custom maual for many language,like English, German, Japanese, Spanish, Dutch, Polish 
some custom sticker, like Amazon FBA upc label... To meet clients requirement. 
Customized software is also possible such as change the standard value , such as shoot logo display , such as customized language display Etc.

7.  Q : What's certificate include? 
A: CE and Rohs   MSDS and UN38.3   ISO9001 

8.  Q : What are the payment methods ? 
A : alibaba transaction guarantee (2% of the additional cost)   TT (Bank wire transfer ,an additional $25 per payment). 

9.  Q : What is the delivery time? 
A : After confirm the order, it will take about 2-30 days to delivery goods depend on the order quantity . 
Some models we have stocks , so 1-3 days will delivery goods; 
Some models not in stocks, if quantity is small , 5-10 days; 
Customized order, it will take 20-25 days normally;
For bulk orders up to 30000pcs

10.  Q : What products your factory produce ? 
A : CO2-Carbon Dioxide Meter   PM2.5 Detector   O3-Ozone Detector 
NH3-Ammonia Detector   Decibel Meter/Noise Meter/Sound Level Meter 
Multi-function Air Quality Monitor ( CO2/PM2.5/1.0/10/HCHO/TVOC,/Temp/Hum )
Geiger Detector ( Nuclear Radiation Detector )   Electromagnetic Detector
Alcohol Tester / Thermo-hygrometer / Weather Station / Multimeter / Radon Detector and so on.