Rubber
| Mon 29 Dec 2025
Alexandria, Dec. 29 -- Chengdu Holy Aviation Science Tech Co Ltd has been awarded a patent for Fully-automatic Production Line and Automatic Production Method for Rubber Seal Rings. This invention was developed by Zhang Xiaofeng, Zhong Jie, Han Chen, Li Bing, Wang Liang, Luo Jiangxiong, Xu Chun, Huang Yong, Ling Xi, Chen Zhe, Xu..