确认内容：1、检查产品本体：七大标示、本体外观状况；2、检查产品底部：

Acknowledgment: <br>1. Check product ontology: Seven indicated, the appearance of the body condition; <br>2, check the bottom of the product: if there is exposed pads, mixed plastic cover, hose warped, and the plastic cover aperture grin leakage failure; <br>3, check the product Top: Are there aluminum shell protrusions (depressions), bald heads, hoses warped, poor explosion-proof, and poor aluminum case leakage

Confirmation:<br>1, check the product body: seven signs, the appearance of the body status;<br>2, check the bottom of the product: whether there is dew welding point, mixed rubber cover, hose up, dew white and rubber cover hole leakage bad;<br>3, check the top of the product: whether there is aluminum shell convex (sink), skinhead, hose up, explosion-proof and aluminum shell leakage

Confirmation content:<br>1. Check the product body: seven marks and appearance of the body;<br>2. Check the bottom of the product: whether there are exposed solder joints, mixed rubber cover, warped rubber tube, exposed white and poor leakage of the rubber cover hole;<br>3. Check the top of the product: whether there is convex (concave) aluminum shell, bare head, warped rubber tube, poor explosion-proof and aluminum shell leakage