Beijing, Oct. 27 -- Lao Feng Xiang Dongguan Jewelry has secured a patent on Multi-dimensional Engraving Integrated Multifunctional Flexible Jewelry. Chen Wenjuan, Li Chunfeng, Wang Lu, Zheng Jindong and Zhu Dongliang developed the invention. The patent application number is CN202520740724U 20250418. The patent publication num..

Beijing, Oct. 24 -- Dechang Sanhui Jewelry Co Ltd has been granted a patent for High-stability Polishing Machine for Processing Jewelry Accessories. Zhou Wei developed the invention. The patent application number is CN202520552062U 20250327. The patent publication number is CN223889723 (U). International Patent Classification..