日韩精品美女少妇激情视频,日韩高清av一区二区三,国产精品亚洲国产精品,欧美日韩国产一二三四五区,国产综合久久精品亚洲,日韩色图在线免费播放,国产白丝一区二区三区,国产一区二区熟女视频,成人日韩在线观看视频,久久熟女av一区二区三区

    1. <rt id="zgx99"></rt>

          <li id="zgx99"></li>

          用微信掃一掃

          二維碼
          Sinoyin Solars Co.,Ltd.
          Mail
          jeremy@sinoyin.com
          Tel
          +86-512-88876960
          ABOUT CASE QUALITY PRODUCTION PROCESS TEST SERVICE FAQ NEWS
          MATERIAL

          SINOYIN QUALITY

          Material Equipment

          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;

          HOME  |  ABOUT US  |  PRODUCTS  |  CASES  |  QUALITY  |  NEWS  |  JOB  |  SERVICE  |  CONTACTS
          黑人人妻av一区二区三区| 尤物视频国产在线观看| 综合偷自拍亚洲乱中文字幕| 免费av网站手机在线观看| 久久久久久人妻无码| 熟女人妇交换俱乐部| 国产成人精品中文字幕| 精品久久亚洲中文字幕| 国产精品激情久久久久久久| 国产精品亚洲二区在线播放| 大屁股熟女一区二区视频| 日韩熟女高清精品专区| 久久亚洲精精品中文字幕| 国产精品自拍中文字幕| 亚洲一二三区精品与老人| 国产成人午夜精品免费视频| 国产成人精品久久综合| 虎白女粉嫩尤物福利写真| 中文字幕日本人妻一区| 精品人妻系列无码人妻不卡| 亚洲妇女黄色三级视频| 亚洲欧美日韩综合在线播放| 国产日本成人在线观看| 国产一区二区三区精品久久呦| av免费看网站在线观看| 久久综合狠狠综合久久综合88| 一区二区三区视频男男| 水蜜桃视频在线观看免费18| 日本欧美网站在线观看| 午夜福利视频合集1000| 亚洲一区二区三区欧美国产| av在线观看在线播放| 亚洲国产精品亚洲高清| 麻豆第一区MV免费观看网站| 青草成人在线免费视频| 欧美熟妇喷水高潮呻吟| 激情一区二区三区视频| 国产精品国产高清国产专区| 亚洲精品精品日本日本| 日韩国产成人精品视频 | 天天爽夜夜爽人人爽免费|