在线1区 I 99久久免费精品 I 7777精品伊久久久大香线蕉软件的优点 I 国产农村妇女精品一区二区 I 粉嫩av一区二区白浆 I 日本久久高清一区二区三区毛片 I 亚洲欧美日韩久久精品第一区 I 色亚洲一区 I 久久久无码精品一区二区三区 I 天天色天天 I 成熟丰满熟妇xxxxx丰满 I 亚洲黄色高清 I 操碰人人 I 在线播放中文 I 国内极品少妇1000激情啪啪千 I 国产又粗又猛又大爽又黄 I 色网站在线观看视频 I 69堂人成无码免费视频果冻传媒 I 99热这里只有精品3 I 免费看成人毛片 I 97久久精品人人做人人爽 I 成人性生生活性生交5 I 欧美精品一区二区三区一线天视频 I 在线免费视频一区 I 久久免费99精品久久久久久 I 欧洲精品在线观看 I 国产日韩欧美在线一区 I 成人久久久 I 毛片手机在线 I 免费一二区 I 日韩在线观看一区 I 疯狂做受xxxx国产 I 亚洲缚视频在线观看 I 成人爽a毛片 I 在线电影 你懂得 二区

Quality Control from the source- Copper Tubes

*Copper tube adopts TP2 copper oxidation resistance, corrosion resistance is strong.
TP2 copper excellent welding performance, welding node good ductility;
*Copper adopt domestic brand copper suppliers, to ensure the quality of copper;
*Copper wall thickness are above 0.6 mm to ensure the sealing of copper pipe flow;

Solar Industry Disclose
1, In order to reduce costs, some manufacturers use inferior copper pipe instead of high quality copper pipe;
2, In order to reduce costs, some factory products are inconsistent with the contract requirements, when mass production, some factories changecollectors inside diameter and wall thickness of the copper pipe;
Solution: sample testing ( random testingq when massProduction )

Quality Control from the source - Aluminum Alloy Frame
* 6063 - T5 aluminum hou resistance is strong, high mechanical strength, is the guarantee of flat collector sturdy and durable ;
* Aluminum surface oxidation treatment,surface generates a layer of protective film layer, to ensure that the plate collector to adapt to the harsh outdoor environment;
* Our aluminum alloy frame from domestic brand aluminum suppliers.

Quality Control from the source - Absorber Material
Absorber is used with imported Germany high efficiency bul titanium, it is of high absorbility, low emissvity, α≥95%, ε≤5%, stable performance.

Quality Control from the source - Absorber Material
The material is EPDM with the good & reliable famous brand supplier,it is of Anti High temperature, weather resistance, uvioresistant,can be more than 20 years working life.

Quality Control from the source -Glass cover
It is used 3.2mm low iron braided tempered glass, the light transmittance can upto 91.2%, also the matted finish on the glass can prevent the second reflex, more important, the hardness of the tempered glass is 5 times harder than normal glass.

Quality control from the source - thermal insulation material
*Insulating materials use glass fiber cotton and stearic foam polyurethane
*Glass fiber cotton high temperature resistance, ageing resistance, coefficient of thermal conductivity is 0.042 W/M * h * ℃, insulation Can good, high hydrophobic, cost-effective;
*Hard foam polyurethane, coefficient of thermal conductivity is 0.027 W/M * h * ℃;
*Our insulation materials are from domestic brand suppliers;