You seem to be confused, Hezbollah is Lebanese, not Palestinian. This topic isn't about Palestinians. Any off topic posts will be reported.
True, majority are standard Katyusha type rockets. Production facilities isn't important here, many of their weapons are transferred through Syria. Any production facilities they have are stationed underground and not going to be found. It's their ability to transfer the weapons to where they need under aerial assault. Which I'm positive is also done through underground mechanism and they are well versed in that matter. If they overwhelm the defense systems, they can cause extensive damage.
Anyway, there won't be any form of war, unless Israel invades Syria or Lebanon, or launches aerial campaign of some sort. This is just a warning for that scenario.
Hezbollah is Lebanese, it also is the party fighting Syrian opposition groups, including Nusra Front and ISIS, in the northern Aleppo area in support of the Syrian armed forces. The Assad government which most Indians support. So I'm quite confused as to why you're anti-Hezbollah. If you're favorable of both Israel and Syria, then remain with a neutral stance.
Muslims don't care about this 'terrorist organization' label stuff. Depending on what Muslim you are, dictates what your position towards Hezbollah is. You as a Saudi Muslim, that sees his country in struggle with Iran, will of course consider Hezbollah, a bad group, because of it's ties to Iran and role in Syria.