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brass fitting

brass fitting

brass fittings all types

 

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solar thermal fin-tube
solar thermal fin-tube

fin and tube ultrasonic welding  good quality  high efficiency black coating

brass fitting
brass fitting

brass fittings all types  

Black anodized selective coating
Black anodized selective coating

high absorptivity good quality 

Blue T coating
Blue T coating

High Absorptivity 95% low Emissivity   4%

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