Heat pipe solar collector SPA/B 10-12-15-18-20-24-30 tubes or others Specification: 1. Inner material: Copper header 0.8mm thickness Outer casing: 2.0mm Anodized AL, or 0.8mm stainless steel 304 2. Insulation: Rock wool 3. Supporting Frame: 1.2mm stainless steel or 2.0mm AL 4. Vacuum tube with heat pipe: ALN/ALN-SS-CU Absorber, glass thickness 1.6mm, efficiency 0.94-0.96 5. Reflector is available Terms: 1. Payment terms: 30% in advance and 70% against copy of B/L or L/C, For sample T/T 100% in advance 2. Delivery terms: 15 working days after receiving deposit or original L/C. 3. Warranty: 7 years 4. Minimum quantity: 5 sets 5. Package: Sunpower standard export package with Sunpower Logo or the package you want on the basis of OEM. 6. Sample is available. With extra wooden boxes for packing About Us: Jiangsu Sunpower Solar Technology Co., Ltd 1. Leading exporter: More than 500000 sets of solar water heater products per year to 82 countries. 2. OEM professional: Systematic OEM service, from package design to tech support. 3. Various certificates: ISO, EN12975, EU CE, Solar Keymark, Kang-Ju, KOLAS, SABS, SRCC 4. Strong warranty: In order to keep long and good business relationships, our company have strict quality control and aftersale service.