1. Look at the surface

仔细查看钢化玻璃表面，一般小厂家为了提高生产速度，往往不在意无意间滴落在钢化玻璃表面的硅胶。不清除的话会降低电池板的发电效率。

Careful inspection of the surface of tempered glass shows that small manufacturers often do not pay attention to the unintentional dripping of silicone on the surface of tempered glass in order to improve production speed. If not cleared, it will reduce the power generation efficiency of the battery panel.

2、看电池片

2. Look at the battery pack

很多不正规的厂家用破碎的电池片拼接，组成看似完整的电池片进行焊接，这种方式存在很大风险，初期可能不是很明显，但是拼接的电池片后期容易再次断开，影响整块电池板的使用。

Many unscrupulous manufacturers use broken battery cells to splice together and form seemingly complete battery cells for welding. This method carries great risks, which may not be obvious in the initial stage, but the spliced battery cells are easily disconnected again in the later stage, affecting the use of the entire battery panel.

3、看背面

3. Look at the back

看背面承压的质量，承压后有没有不平整的情况出现，如气泡、褶皱之类的。

Check the quality of the pressure on the back and see if there are any unevenness, such as bubbles, wrinkles, etc. after the pressure is applied.

4、看边框

4. Look at the border

由于太阳能电池板行业进入门槛低，很多小厂家采用人工打框的方式，人工打框由于每次打框的力度不均，打好的框接触紧密程度也不一，造型不成严格的矩形，牢固程度也大打折扣。

Due to the low entry threshold of the solar panel industry, many small manufacturers use manual framing. Due to the uneven force of each framing process, the tightness of the finished frames varies, and the shape is not strictly rectangular, resulting in a greatly reduced degree of firmness.

5、看硅胶

5. Look at silicone

看背面四周硅胶是否均匀分布，是否紧密渗入背板和边框的缝隙。

Check if the silicone around the back is evenly distributed and tightly penetrates into the gaps between the back panel and frame.

6、看焊接

6. Look at welding

仔细观察电池片的串焊有无漏焊现象。同时也要看下电池片排列是否规整。

Carefully observe the string welding of the battery cells for any solder leakage. At the same time, it is also necessary to check whether the battery cells are arranged neatly.

7、看接线盒

7. Check the junction box

后看接线盒是否牢固，接线盒盖子是否能牢靠、紧密地贴在接线盒上;看出线电线锁头是否旋转自如，能否收紧。

Check whether the junction box is secure and whether the cover of the junction box can be firmly and tightly attached to the junction box; Check if the wire lock can rotate freely and tighten.

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This article is dedicated to the friendship between industrial and commercial rooftop photovoltaics. For more relevant knowledge, please click on: //tianjibiotech.com Sincere attitude. We will provide you with comprehensive services. We will gradually contribute more relevant knowledge to everyone. Stay tuned