Updated 1/17/16
Buyer beware. These are sac pens that can’t take a converter or a cartridge.
1. [Fuguilong 1006] Free Famous Style Senior Collection fountain pens Iridium Point pen.B-29
ebay from xiongfu1990
zhejiang, China
“Fuguilong 1006” engraved on the clip. Senior Collection FP. Bought eBay 12/29/15 Iridium B-29 ebay $0.99 FS. Arrived 1/11/16. The B-29, B-22, and B-15 were all sold by Xiongfu1990 and arrived in the same package.
2. [Fuguilong 1009] Free Famous Style Senior Collection fountain pens Iridium Point pen.B-15
ebay from xiongfu1990
zhejiang, China
“Fuguilong 1009” engraved on the cap edge. Jinhao B-15, blk and silver. Bought eBay 12/29/15 for $0.99 FS. Arrived 1/11/16. The B-29, B-22, and B-15 were all sold by Xiongfu1990 and arrived in the same package.
3. [Fuguilong 1002] NEW Famous Style Senior Collection fountain pens Iridium Point pen.B-22
Ebay
xiongfu1990
zhejiang, China
12/29/15 Bid $2.01 FS
“Fuguilong 1002” engraved on the side of the cap. Senior Collection FP Iridium B-22. Bought eBay 12/29/15 xiongfu1990 $2.01 FS. Arrived 1/11/16. The B-29, B-22, and B-15 were all sold by Xiongfu1990 and arrived in the same package.
1/17/16: The converter won’t come off. I tried to pull it off, and the outer shell detached from the soft rubber sac. This is not a piston converter. The nib and feed came off easily. The feed has a long extension that goes into the sac. I haven’t tested this with ink yet. I doubt if this pen will take a cartridge or a converter.
fountainpenplanet 
You’re right, I’m afraid. These are the equivalent to some of the old lever pens– no converter, no cartridge possible. The rubber (?) sac is permanently in place, and is filled by pumping the “lever” on the plastic shell that surrounds it.
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I thought the photos in their ad were misleading. It looks as thought the pen runs on cartridges (attached, in the photo) and converters (separate, in the photo). In fact, the “cartridge” is a permanently attached sac and the “converter” is a plastic sleeve that fits over the sac. The seller should have been much more forthcoming re the ink options. I haven’t tested these pens yet, so I’m not sure about their performance qualities.
If older lever action pens such as the Esterbrook had screw-on sections, I wonder if they could accommodate similar plastic sleeves. If yes, they’d be an alternative to levers and their J-bar mechanisms.
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