Middling coal No.3 Construction (Group) Co., Ltd. 30 Engineering Division Chaoyuan Project Department Equipment Maintenance Service Purchase Inquiry Announcement 1, Inquiry Scope No. Equipment Name Specification Model Maintenance Content Quantity Unit Remark 1 Reducer B3SH12A Replace bearing, oil seal, fan blade, repair welding, replace fastening screw, cleaning, calibration, test 2 sets of explosion-proof variable frequency adjustable speed three-phase asynchronous motor YBBP-355-L2-4/315kW Replace bearing, seal, fan blade, replace fastening screw, replace temperature control device, cleaning, calibration, test 2 sets of explosion-proof motor YBUS-132kW Replace bearing, seal, fan blade, replace fastening screw, replace temperature control device, cleaning, calibration, test 1 set Note: The inquiry quantity is provisional, and the Project Department shall sign a contract according to the actual needs and shall not exceed the scope of this inquiry. 2. Qualifications that applicants must meet: (1) Bidders must be legal persons or other organizations, have the business scope required for this bidding, have the ability to independently enter into contracts, and must provide value-added tax special invoices. (2) Capable of independently assuming civil liability and fulfilling contracts. (3) Having a good credit rating, with no adverse performance or significant illegal records in the past three years of operation. (4) Other qualification requirements stipulated by laws and administrative regulations. (5) Bidders shall not have any of the following situations: ① have a vested interest in the bidder and may affect the fairness of the inquiry; ② The person in charge of the same unit as other bidders in this inquiry project; ③ There is a controlling or management relationship with other bidders in this inquiry project; ④ The property is reorganized, taken over, sealed, seized or frozen; ⑤ Those who have fraudulently won the bid in the past three years; ⑥ Termination of contract/agreement due to serious breach of contract agreement within the past three years. 3. The bid invitation system can be set up in China Coal Mine for those who intend to participate in bidding（ https://zmjc.ccmcgc.com ）Register and sign up. After the application is approved, the bidding and mining system will be established from China Coal Mine（ https://zmjc.ccmcgc.com ）Obtain the inquiry document. 4. Deadline for registration: 16:00:00, May 20, 2025 Deadline for quotation: 17:00:00, May 20, 2025 Time for bid opening: 17:00:005, May 20, 2025 Name of inquiry unit, address and contact information unit: Chaoyuan Project Department of the 30th Engineering Division of middling coal Third Construction (Group) Co., Ltd. Address: Chaoyuan Coal Mine Project Department, Shenmu City, Yulin City, Shaanxi Province Contact person and contact phone: Qi Meng 18009125942 (technical related issues) Contact person and contact phone: Chen Shengye 17562139697 (platform related issues) Supervisor and report phone: Zhao Bin 18149120145 middling coal Third Construction (Chaoyuan Project Department of the 30th Engineering Division of the Group) Co., Ltd. May 2025