Many places in Tianjin sell thermostats. I don’t know if your quantity is large.
For retail, just go to the Xinnan Road Hardware City on Miyun Road, and you can buy it wholesale.
There are also companies in Tianjin that specialize in selling thermostats. I will give you some contact information and call them to ask.
Tianjin Fumingda Technology Co., Ltd.
Address: 6-2-102, Shenlan Apartment, Anshan West Road, Nankai District, Tianjin, China
Contact: Xu Ming
Telephone number: 86-22-81156466
Fax: 86-22-27483901
Tianjin Suolong Electronic Technology Co., Ltd.
Room 310\318, Building 3, Science and Technology Park, University of Science and Technology, No. 55 Miyun Road, Nankai District
Contact person: Gao Yun
Tel: 022-23619431/87611925
Fax: 022-28282507
Tianjin Zhongyatai Electrical Instruments Firm
No. 120, Building 10, District 1, Hardware City, Xinnan Road
The above information is for For reference, if you want to place an order, you need to discuss it with the seller in detail. Don’t be deceived. I hope I can help you.