Thanks for your mail.
Please check which kind of demo cylinder you want:
1. The previous cylinder we submitted to you (Completely same one)
2. The 13.4L cylinder same as CATALINA cylinder (as drawing confirmed)
If you choose the option 1, the goods can be sent to you very soon. But if you choose the option 2, we have to make the cylinder newly and need more time to send to you.
Or you can send me all the detailed size, so that we can make the cylinder for you according to your requirement strictly.
Your earlier reply will be highly appreciated.