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About Us

3nh specializes in high-precision color measurement instruments, including colorimeters, spectrophotometers, and haze meters, serving industries like textiles, plastics, and coatings. With innovative R&D and global reach, we deliver reliable solutions for color management and quality control, trusted by customers in over 80 countries.

Test Charts

Test Charts Frequently Ask Questions

A haze meter should be calibrated every 6 months, or more frequently if used for certain quality control processes.


Threenh Technology with excellent after sale service, Generally, Our Spectrophotometer instrument warranty is one years(Additional support period of 3 years). Within the warranty period, we can offer technique support and parts to parts change, necessarily, our engineers may go to your place for better support. Our instrument have professional After-sales Dept, if you have any technical problem or question with our goods welcome to contact us.

Spectrophotometers can only measure haze if it has haze measuring capabilities, as many measure color and transmittance.


The dry film thickness is assessed after the coating is cured, while the wet film thickness is obtained immediately after the coating is applied using a wet film comb gauge. Dry film measurement is critical to ensuring that the coating applied matches the standards expected in terms adherence and polish. 

For complete color evaluation, the CAC is commonly outfitted with D65 (daylight), TL84 (store light), F (home light), UV, and CWF (cool white fluorescent) lamps. 


Threenh Technology colorimeter is shipped with an operating instructions and video of English version.If you need an electronic version of the user manual, you can download it from our website download center

A haze meter measures the light.  It quantifies the measure of transmitted light across a material and the degree of scattered and diffused light.


A colorimeter sends light through a solution and measures the amount that is absorbed. It computes the absorbance by comparing the intensity of light before and after passing through. The greater the concentration of the color, the greater is the absorption of the light. It is also possible to quantify the color of the solution.


 Inquiry - quotation - communication - order confirming - deposit payment - production - testing and debugging - balance payment - packing - delivery - customer receiving - after service. 

Gloss is a broad term to describe the reflectivity of a surface. Whereas high gloss is a specific term that has the highest reflectance (usually more than 70 GU). High gloss finishes are shiny, mirror-like, and exhibit more surface blemishes than lower gloss finishes.