Company: STAK
Filing Date: 2025-11-05
Form Type: 20-F
Source: 0001493152-25-020818
Chunk: 55

Company: STAK Inc.
Filing Date: 2025-11-05
Form: 20-F
Item: Item 4
Chunk 55
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489HP)                                                                                                 
Washing Assembly Equipment   Cold Washing Conditions: Maximum Operating Pressure: 60MPa Maximum Displacement: 80m³/h Hot Washing Conditions: Maximum Operating    
                             Pressure: 20MPa Maximum Displacement: 20m³/h Maximum Outlet Temperature: 160℃ Heating Furnace: 18m³/h Horizontal                     
                             Direct Current Hot Water Boiler                                                                                                      
Oil Field Rescue Assembly    Wheelbase: 5050+1450, Front Overhang: 725mm. Side Protection:                                                                        
Equipment                    Material 6.3 channel steel welded with 3mm steel plate, Connection Method: Bolt Connection. Rear Protection: Material 120×70         
                             rectangular tube welded, Cross-sectional dimension: 120mm×70mm, Height from Ground: 480mm                                            

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Oil Field Liquid Nitrogen                                                                 Exterior:                                                             
 Pump Assembly Equipment        Cold-rolled steel plate, interior aluminum alloy plate, insulated with fire-resistant material in between. There are rainproof  
                              natural ventilation windows on the top sides of the compartment. The bottom is covered with flame-retardant and static dissipative
                              rubber board. Fixed loops are installed on the side of the compartment. Inside the compartment: Smoke sensor installed on the top,
                                                        anti-theft device above the door frame, equipped with two fire extinguishers.                           
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Oil Field Logging Assembly   Both sides are protected by a skirt instead, with the                                                                              
Equipment                    rear skirt 540mm above the ground; Optional height without air conditioning cover is 3945mm; Structure, ABS model/manufacturer: 486
                             106/KNORR; Net engine power is 353KW; Optional appearance with signal lights above both sides of the compartment.                  
Research and Development
 
In the fiscal years 2025 and 2024, our continuous expenditures on research and development were approximately $3.3 million and $1.7 million, respectively.
 
Research Management with Academic and Institutional Collaboration
 
As a small company with limited resources and capabilities, we will continue to leverage social and academic resources. In March 2023, we partnered with Dalian University of Technology Jiangsu Research Institute to jointly establish the Smart Oilfield Specialty Vehicle Research Center. The institute dispatched 10 research and development experts to work full-time at the center, including four with doctoral degrees and four with master’s degrees. The institute integrates technology research and development, outcome transformation, and talent development, focusing on the efficient, energy-saving