Dabojin Trademark and Patent Law Firm (Longgang) Co., Ltd. Dabojin Trademark and Patent Office (Longgang) Co., Ltd. was established in 2020. It is located in Jinchai Street, Longgang City, Wenzhou City, Zhejiang Province. It mainly engages in: patent applications, etc. The company is the fastest and most efficient patent application company in Longgang City. A professional company, the company's brand quality and effect are very good, and it is deeply loved by everyone.