February 22, 2025​ – Inside the production workshop of Shandong Dongfa Refrigeration Technology Co., Ltd., workers are conducting seal tests on products. Packed and ready for shipment, these products are destined for Europe, the Americas, and other international markets.

“The multi-functional combination valve system we developed not only won the 2023 Shandong Equipment Manufacturing Technology Innovation Award but was also listed in December as one of Shandong’s first (set of) technical equipment manufacturers included in the ‘White List’,” said Wang Chao, Deputy General Manager of Operations at Shandong Dongfa Refrigeration Technology Co., Ltd.

Dongfa Refrigeration Technology is an enterprise focused on the R&D, production, and sales of valves for industrial cold storage refrigeration systems. After years of dedicated effort in this specialized and relatively “niche” industry, the company has rapidly grown into a leading player.

“Take the six-in-one combination valve we recently developed, for example. It integrates six valves into a single housing, greatly simplifying installation. What used to take one worker eight hours to install can now be completed in just 20 minutes. For maintenance, only the valve core needs replacement, saving both time and labor,” Wang Chao explained, pointing to the multi-functional valve. “The product has recently entered mass production and has been well-received by customers.”

Valves for cold storage must maintain excellent air tightness and corrosion resistance under low-temperature conditions. To meet these demands, Dongfa collaborated with Liaocheng University on R&D for heat treatment technology of low-temperature pressure-regulating multi-functional valve housings, along with the study and application of LCC steel for low-temperature high-strength valve housings. This project was recognized as a Shandong Provincial Sci-Tech Capability Enhancement Initiative.

“After two years of development, our new alloy steel material can withstand ultra-low temperatures as extreme as -196°C, with significantly improved impact resistance, low-temperature pressure endurance, and material toughness,” Wang Chao noted.

As the saying goes, “Good wine needs no bush.” Building on several years of rapid growth, Dongfa’s sales performance increased by 10% last year, with 30% of its products exported to international markets such as Western Europe and the Americas.

Looking ahead, the company has planned a new project aimed at producing one million high-end refrigeration valves annually. This initiative will further leverage Dongfa’s technological expertise, better meet market demand, drive technological innovation, and provide a broader range of high-quality products to the global market.