Price Comparison Document for the Repair Project of the Water Intake Transformer at the Former Mine of Chongqing Sote Salt & Chemical Co., Ltd.

1. Price comparison conditions
This quotation project—repair of the water intake transformer at the former mine site of Chongqing Sote Salt & Chemical Co., Ltd.—has been approved by Chongqing Sote Salt & Chemical Co., Ltd. The project owner is Chongqing Sote Salt & Chemical Co., Ltd., and the project now meets the conditions for competitive bidding. We are hereby inviting quotations for this project.
2. Project Overview
2.1 The mine’s water intake oil-immersed self-cooled transformer, model S9-800 800 kVA/10 kV, was put into operation in 2004. The dielectric loss test of the transformer’s insulating oil has failed to meet the standards. Currently, there is severe oil leakage at the disconnecting switch of the No. 3 salt-making circulating water transformer, posing a serious equipment hazard. After maintenance and repair, this transformer needs to be replaced with the No. 3 salt-making circulating water transformer before it can be put back into operation; therefore, it requires off-site inspection and repair.
2.2 Fault Description: An oil-immersed, self-cooled transformer (model: S9-800/10) is experiencing oil leakage at the high- and low-voltage porcelain bushings due to aging of the insulating gaskets, as well as at the tap changer and gas relay. Additionally, the cooling oil has aged (the dielectric loss test of the transformer’s insulating oil failed), and the breather has also aged. The transformer now needs to be replaced with salt-production circulating water, so it must be sent out for repair.
2.3 Contract Duration: The delivery period shall be determined based on Party A’s production requirements (typically 7–15 days for minor repairs). Party B shall meet Party A’s time requirements; for each day of delay in delivery, a penalty of RMB 2,000 will be deducted. In special circumstances, both parties shall negotiate and communicate accordingly.
2.4 Project Scope: Repair of the original mine water intake transformer (1 unit) for Chongqing Sote Salt & Chemical Co., Ltd.
3. Payment Terms: The quotation includes 13% value-added tax and round-trip transportation costs, under a single-invoice system. Twelve months after the transformer has passed the initial acceptance inspection by Party A, Party B shall issue an invoice for 13% value-added tax. Within one month, Party A shall pay Party B 50% of the repair fee. The remaining 50% shall be paid one year after the transformer is put into normal operation and begins to function as intended.
4. This contract shall be valid for a period of one year from the date of signing.
5. Qualification Requirements for Bidders
5.1 Bidding companies must provide a photocopy of their business license for inspection and maintenance services related to power equipment such as transformers.
5.2 Bidders shall provide at least three or more recent performance records of similar transformer maintenance work within the past two years.
5.3 Before signing the contract, Party B shall pay a performance bond equal to 10% of the contract amount (based on the contract value). The bond will be fully refunded upon completion of the contract and confirmation that there are no objections.
Bidding and bid opening time and location.
Deadline: 17:00 (Beijing Time), December 3, 2025
Bid opening time: December 1, 2025, 10:00 a.m.
Bid opening location: (Discipline Inspection Office of Chongqing Sote Salt & Chemical Co., Ltd.)
9. Bidding and Contact Information
Please send your qualification and quotation documents to the email address: xiangyuyanhua@163.com.
Contact: Sun Teng
Phone: 15998962084
Address: No. 98, Longxiang Avenue, Wanzhou District, Chongqing City
Supervision phone numbers: 023-61002070 or 13708371911
Company address for this project: No. 98 Longxiang Avenue, Wanzhou District, Chongqing City, Chongqing Sote Salt & Chemical Co., Ltd.

Disclaimer: The official platform for our company’s announcement of this tender is the website of Chongqing Xiangyu Salt & Chemical Co., Ltd.: http://www.cqxyyh.com. Apart from this, our company has not published any tender information on any other websites, forums, or media platforms. Any tender information reproduced from other sources and attributed to our company as the tendering entity is unauthorized and therefore invalid. We reserve the right to pursue legal action against such unauthorized reproductions.