This actually shows how weak Taiwan's defence industry is when they can't build much of their nessasary equipment and systems.
Sorry. It does not show them "weak" at all.
They actually build an amazing number of their own necessary systems for the size and resource base that their country (Island) represents. For example:
- F-CK-1 Multi-role 4th generation fighter/bomber (similar to F-16)
- AT-3B Advanced jet trainer (capable of combat role)
- Sky Sword II MR, Radar Air to Air missile (similar to AMRAAM)
- Sky Sword I SR IR Air to Air missile (similar to Sidewinder)
- Sky Bow III Long Range, High performance BMD capable SAM (similar to Patriot)
- Sky Bow II Medium Range SAM
- CM-32 new 8-wheeled IFV (first 100 building)
- CM-21 Tracked APC in various confgs (APC, AT w/Tow Missiles, Mortar, etc.)
- King Feng IV Tracked 117mm Multiple Rocket Launcher
- Thunderbolt 2000 8 Wheeld Multiple Rocket Launcher
- Kang Deng Frigates (license built, modified Perry Class Frigate - 8 built
- Ching Chiang Offshore Patrol Vessel - 12 built
- Kuang Hua VI Missile boats - 30 built
- Hsun Hai Stealth Corvettes - 12 building ($800 Million (US) budget approved in 2012)
- Hsiung Feng II subsonic SSM 160kmn range, 180 kg warhead (like Harpoon)
- Hsiung Feng II supersonic (Mach 2+) SSM 150km range 180 kg warhead
All of these are built and maintained by the Republic of China...in addition to the significant purchases (like the one we are talking about) that the ROC has made.
Which shows, that in addition to building a lot of their own necessities, they have the smarts to come up with the design and specify the other things they need, and then go to the market place and get it.
Of course Taiwan cannot build everything it needs. As stated, it is a small nation with limited resource.
But, the US, as big as is it and with the massive resources it has, still also acquires some systems from other nations. The mainland Chinese do the same thing. Does this mean they are weak? No, not at all.
Given their size and resource, I believe the ROC has done very well for itself, and although without help they could not hope to win a long term war of attrition in any way with the PRC, they do have enough capability to make it very expensive to contemplate...which, along with the suppotr they receive, particualrly from the US, has provided a strong enough deterence to date to avoid war.