GUOTAI HAITONG SECURITIES·2025-12-18 12:52Investment Rating - The report assigns an "Accumulate" rating for the mechanical industry [1]. Core Insights - The price of liquid argon continues to rise, while the average weekly price of rare gases remains stable [3][4]. - The operating load rate of China's industrial gas sector has increased on a weekly basis [3][4]. - Hangyang has won the bid for the BEST low-temperature distribution valve box project, which includes seven sets of low-temperature distribution valve boxes for the compact fusion energy experimental device [3][4]. Summary by Sections Price Trends - Liquid argon has an average price of 949 RMB/ton, showing a week-on-week increase of 3.94% and a year-on-year increase of 52.84% [4]. - The average prices for other gases are as follows: - Liquid oxygen: 372 RMB/ton, down 2.87% week-on-week, down 5.1% year-on-year - Liquid nitrogen: 388 RMB/ton, down 0.78% week-on-week, down 3.6% year-on-year - High-purity helium (cylinder): 625 RMB/bottle, stable week-on-week, down 5.15% year-on-year - Xenon: 22,500 RMB/cubic meter, stable week-on-week, down 23.73% year-on-year - Krypton: 215 RMB/cubic meter, stable week-on-week, down 38.57% year-on-year - Neon: 110 RMB/cubic meter, stable week-on-week, down 12% year-on-year [4][8]. Operating Load Rate - As of December 10, 2025, the average operating load rate for China's industrial gas sector is 70.28%, reflecting an increase of 1.28 percentage points week-on-week [4][7]. Key Events - Hangyang has successfully secured the bid for the low-temperature distribution valve box project for the BEST low-temperature system, marking a significant achievement in the industry [4][3]. Recommended Stocks - Recommended stocks include Hangyang Co., Ltd. and Shaanxi Blower Co., Ltd. with related stocks being Zhengfan Technology, Fostar, and Zhongtai Co., Ltd. [4].