<table border="1" cellspacing="0" cellpadding="8"><tbody><tr><td>Pipe Class</td><td>/</td><td>Connectivity</td><td>Welding</td></tr><tr><td>Surface Treatment</td><td>Cleaning Supplies</td><td>Technic</td><td>Other</td></tr><tr><td>shape</td><td>Equal</td><td>head code</td><td>Other</td></tr><tr><td>Mounting hole diameter</td><td>/</td><td>customized support</td><td>OEM</td></tr><tr><td>Product name</td><td>Return bend</td><td>Application</td><td>Refrigeration</td></tr><tr><td>material</td><td>Copper</td></tr></tbody></table>