Base material shall be 1‑mm‑thick 201 LH stainless steel. Its yield strength shall surpass 1050 MPa, tensile strength shall be above 1350 MPa, and the tensile load capacity of welding joints shall be no less than 21 kN. Insulation coating shall satisfy UL94‑V0 flame‑retardant classification requirement. Finished components shall be free from surface cracks, stains and other visual or structural imperfections. Insulation layer shall withstand 3500 V DC for 60 seconds with