Fire refining can obtain 99-99.9% pure copper, and electrolysis can make the copper purity reach 99.95-99.99%. Copper is relatively pure copper. The use of copper tape：High purity, fine tissue, low oxygen content.
eBay
1/2pcs T2 Pure Copper Round Plate Circular Sheet Thick 0.1mm - 5mm copper disc diameter 30mm 31mm 32mm 33mm 34mm 35mm-50mm
Aliexpress UK
This sheet may have slight scratches but all sheets have one side with protective film apart from 2.5mm which has no film.
eBay
2Pcs Coppers Disc T2 Diameter 30mm 50mm 60mm 80mm Coppers Round Plate Circular Sheet Thickness 0.5mm 0.8mm 1mm 1.5mm 2mm 3mm
Aliexpress UK
T2 Copper Strip is manufactured from high-purity electrolytic copper through precision rolling processes, achieving a purity of up to 99.9%. With its exceptional performance and stability, it serves as an ideal material choice across multiple industries.
eBay
T2 Copper Disc Pure Copper Round Plate Circular Sheet Thickness 0.1mm - 5mm Diameter 30mm 31mm 32mm 33mm 34mm 35mm~50mm
Aliexpress UK
T2 Copper Strip is manufactured from high-purity electrolytic copper through precision rolling processes, achieving a purity of up to 99.9%. With its exceptional performance and stability, it serves as an ideal material choice across multiple industries.
eBay
1Meter T2 Red Copper Strip Sheet Thickness 0.01-1mm Copper Coil Plate Width 10-300mm 0.02/0.05/ 0.1/0.15/0.2/0.25/0.3/0.4/0.5mm
Aliexpress UK
Material：T2. Thickness：0.5mm to 6mm. Size : Thickness x Width x Length. Good Good quality. 1.5 x 100 x 200mm. 1.5 x 100 x 150mm. 6 x 500 x 500mm. 6 x 300 x 300mm.
eBay
1/2pc T2 Copper Disc Diameter 30mm 50mm 60mm 80mm Pure Copper Round Plate Circular Sheet Thickness 0.5mm 0.8mm 1mm 1.5mm 2mm 3mm
Aliexpress UK
Laser machine, engraving machine, bending, CNC shaped. Excellent electrical, thermal and corrosion resistance, bright color. No air holes, trachoma, etc., good thermal and electrical conductivity, processability, ductility.
eBay
2pcs 99.9% Pure Copper Sheet Plate 18/20/24 Gauge 100x100mm, 4" X 4", 0.5mm 0.8mm 1mm 2mm 3mm Thickness, Copper Plates
Aliexpress UK
High-quality cold rolled mild steel sheets, precision guillotine cut to your selected size. Includes squareness and standard sheet deviation. Sheets are guillotine cut to size. • Dispatched within 24 hours (Mon–Fri).
eBay
High Quality 1meter Copper Line Wire 0.5mm/0.8mm/1mm/1.5mm/2mm/2.5mm/3mm T2 Copper Red copper 99*90% Bare Wire
Aliexpress UK
Material: 99.9% Pure Copper. Features: Good electrical conductivity, plasticity, thermal conductivity, ductility and corrosion resistance.
eBay
Copper Pipe Refrigeration Tube Soft Copper Tube 2m T2 Soft Copper Coil Tube Pipe ID 4mm OD 6mm Thickness 1mm for Refrigeration
Aliexpress UK