1. Eight thin-walled tube has independent pipe cover 2. The tube covers are connected, which is more convenient to provide more choices for different experimental purposes. 3. The cap has good sealing performance and good ride comfort 4. Flat cover, high transparency 5. The thin-walled design has high thermal conductivity, so that the reaction fluid in the tube reaches the target temperature at the fastest speed. 6.Different Design meet different customer's request .
