air conditioner copper tube with greenish black streak

{"cid":"91136767","title":"Air conditioner air cooled condenser coil FNA-0.25\/1.3 , refrigerator condenser","imgUrl":"https:\/\/img.chinax.com\/nimg\/75\/2d\/774eb4503cf34bcfc612432ee94a-200x200-1.jpg","attrs":{"Price":"discussed","Brand Name":"XMK","Model Number":"FNA-0.25\/1.3","Minimum Order Quantity":"1pcs","Delivery Time":"7-10 working days after received your payment","Certification":"CE, CCC, RoHS, UL","Place of Origin":"China","Payment Terms":"L\/C, T\/T, Western Union","Supply Ability":"5,000pcs per month","Packaging Details":"Carton box","Power Supply":"Electric","Condensation Forms":"Air-Cooled","Application":"cold storage","Material":"Aluminum","voltage":"220","Heat transfer area":"1.3\u33a1","Dimension(L*W*H)":"225*45*210mm","Diameter of fans":"150mm","Fan air volume":"300m\u00b3\/h","fan motor power":"16W","Normial Capacity":"90W","Specification":"2*4(XL)"}}

{"cid":"91222562","title":"Air conditioner air cooled condenser coil FNA-0.25\/1.3 , refrigerator condenser","imgUrl":"https:\/\/img.chinax.com\/nimg\/75\/2d\/774eb4503cf34bcfc612432ee94a-200x200-1.jpg","attrs":{"Price":"discussed","Brand Name":"XMK","Model Number":"FNA-0.25\/1.3","Minimum Order Quantity":"1pcs","Delivery Time":"7-10 working days after received your payment","Certification":"CE, CCC, RoHS, UL","Place of Origin":"China","Payment Terms":"L\/C, T\/T, Western Union","Supply Ability":"5,000pcs per month","Packaging Details":"Carton box","Power Supply":"Electric","Condensation Forms":"Air-Cooled","Application":"cold storage","Material":"Aluminum","voltage":"220","Heat transfer area":"1.3\u33a1","Dimension(L*W*H)":"225*45*210mm","Diameter of fans":"150mm","Fan air volume":"300m\u00b3\/h","fan motor power":"16W","Normial Capacity":"90W","Specification":"2*4(XL)"}}