Gold Requires Tempering, Jade Needs Polishing

Guoke Hanhai's Journey of "Forging the Sword"

In the cultural genes of Guoke Hanhai, four words are inscribed: "Gold Requires Tempering".

These four words stem from the unique experience of laser spectroscopy technology R&D —

A piece of quartz glass must undergo a thousand polishes to achieve nanoscale flatness for use as a high-precision laser lens.

A laser beam needs to go through tens of thousands of wavelength calibrations in the laboratory to achieve ppm-level gas detection accuracy.

Just as raw jade becomes a fine artifact through carving, true core technologies are always refined through continuous tempering.

Ten Years to Forge a Sword: The "Breakthrough" Journey from Laboratory to Industrialization

In 2010, when the Guoke Hanhai team took over the industrialization task of "laser absorption spectroscopy technology" from the Chinese Academy of Sciences, they faced a major challenge: how to adapt the precision instruments in the laboratory to the high-temperature, high-humidity, and high-interference environments of industrial sites?

Mr. Li Shuguang, the chairman, rooted himself in chemical plant areas with the equipment, recording data beside pipelines at 40°C and testing stability in storage tank areas at -20°C. To solve the problem of signal attenuation of lasers during long-distance transmission, Mr. Li You'an, the technical director, led the team to stay in the laboratory for three consecutive months, testing 17 optical path designs. They finally developed the "anti-interference fiber coupling technology", which maintains over 90% stability of laser signals after 10 kilometers of transmission.

It is this persistence in "refining details" that transformed the technology originally only existing in papers into monitoring equipment that can operate stably in petrochemical plants and coal mine underground. Today, Guoke Hanhai's TDLAS system serves more than 300 industrial scenarios nationwide. Behind this are tens of thousands of parameter adjustments and the accumulation of over 200 technological iterations.

Every Challenge is a "Honing Stone"

In the field of laser detection, "interference" is an eternal challenge. Once, when customizing a leak monitoring solution for a large gas group, the customer asked: "Water vapor near the pipelines will affect detection accuracy. Can this be solved?"

The R&D team did not shy away from it. The optical group and the algorithm group collaborated across disciplines. Optical engineers optimized the laser wavelength to avoid water vapor absorption peaks. Algorithm engineers introduced an AI spectral decoupling model, enabling the equipment to "accurately target" in complex gas environments. After 45 days of joint research, they finally achieved a methane detection accuracy of less than 5 ppm even in an environment with 95% humidity.

Such stories happen every day at Guoke Hanhai. To address laser drift in high-temperature environments, they developed the "dual-line temperature compensation method". To meet the demand for simultaneous detection of multi-component gases, they broke through the "broadband laser synchronous analysis technology"... The overcoming of each challenge is a mark of the technology's growth through tempering.

Those Who Temper Themselves Shine Naturally

The spirit of "Gold Requires Tempering" is not only reflected in technology but also integrated into the daily work of the team. A newly recruited sales representative went down the mine three times with engineers to understand the on-site needs of coal mine gas monitoring, filling two notebooks with notes. A after-sales engineer received an emergency repair call from a customer on New Year's Eve and drove 400 kilometers to the site to ensure the stable operation of the equipment during the Spring Festival.

They know that sales are not just about selling products, but also about conveying confidence in technology to solve problems. After-sales service is not just about repairing equipment, but also about safeguarding the safety bottom line of industrial production. This refinement of "professionalism" has earned Guoke Hanhai continuous trust from customers — a petrochemical customer has continued to place additional orders for five consecutive years, saying "Your equipment, like your people, is reliable".

Tempering never stops, and light never fades.

The precision of lasers comes from every wavelength calibration. The growth of an enterprise comes from the continuous tempering of technology and services. "Gold Requires Tempering" is not just a slogan, but Guoke Hanhai's reverence for technology and commitment to customers.

In the future, facing more complex industrial scenarios and more precise detection needs, we will still uphold the patience to "polish" and the determination to "temper", allowing TDLAS technology to shine in more fields. We will interpret the original aspiration of "protecting safety through science and technology" with proven strength.

Because we firmly believe: true value always lies in the daily tempering.