密封性良好，表面光泽度良好。

A good sealing surface, a good gloss.

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加注：在确定空调系统密封性良好的情况下，进行自动定量加注。

Filling: Automatically fill refrigerant into the perfectly sealed air-condition system with a fixed quantity.

youdao

密封性良好，使用寿命长，即使密封面损坏后，也只需要更换易损零件，即可继续使用。

Good sealing, long service life, even after the sealing surface damage, but also only need to replace the wearing parts, you can continue to use.

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