<table border="1" cellspacing="0" cellpadding="8"><tbody><tr><td>Connectivity</td><td>Flange</td><td>Technic</td><td>Forged</td></tr><tr><td>shape</td><td>Equal</td><td>head code</td><td>Round</td></tr><tr><td>customized support</td><td>OEM, OBM</td><td>Pressure</td><td>ultra-high vacuum</td></tr><tr><td>Connection</td><td>copper gasket & srews</td><td>Surface treatment</td><td>Mirror Polished</td></tr></tbody></table>