This "5 1" code, like the number at the beginning of the ID number, is the code of Sichuan Province.
For example, if the code of Beijing is 1 1, then the registration number of a company established in Beijing must start with 1 1, and the identity card of Beijing also starts with1.
City and county code, you can check this Baidu document.
Code of administrative divisions above the county level (as of February 3, 20091).
5 10 1 is the code of Chengdu.
Go to Baidu, Sichuan Industrial and Commercial Bureau or official website in Chengdu.
You can query the information of any enterprise registered in Chengdu.
I looked it up for you.
Enterprise Name Guangzhou Hongxing Enterprise Management Co., Ltd. Chengdu Branch
Address: No.33 1 Building 3-39, Daqiang West Street, Qingyang District, Chengdu
Legal Representative Xu Xinglin
Registration number 510105000148735
Type of enterprise branches of a limited liability company (natural person investment or holding)
Management services of other enterprises in the industry.
Date of approval: 20 1 1-04-22
Registration Authority Qingyang District Administration for Industry and Commerce Branch Bureau
Scope of business enterprise management information consultation; Research, development, transfer and service of food technology; Mechanical equipment, communication equipment, daily necessities, stationery, office supplies, toys, electronic products, Wujinjiaodian, knitwear, auto parts, furniture, kitchen utensils, shoes and hats, clothing, handicrafts, ceramics, audio equipment. (The above business scope does not include items prohibited or restricted by laws and regulations and the State Council. If the license is involved, it shall be operated according to the content and time limit of the license, and the licensed project shall be operated with the license or approval document).