most of them are side quest mission enclaves and only if you finished their final mission.
list of enlaves and their trading items
-Side Quest Military Enclave :Now they offer many new guns and ammos.
-Side Quest Booze Enclave: Increase amount of molotov and crafting ethanal
-Side Quest Medic Enclave: Now they offer medical facilities and also sell more plague cure
-Side Quest Mechanic Encalve: Increase amount of fuel bomb and repair tool kit
-Other Neighborhood Enclave(Allied): Increase item to sell and they will sell crafting component like box of seeds or circuit board
-Ammo Trader: increase ammo rucksack selling,increase amount 40mm ammo.
-Food Trader: increase food rucksack selling,increase amount box of seed by 100%
-Material Trader : increase material rucksack selling,add facility like portable generator or water barrel mod
-Medicine Trader : increase medicine rucksack selling,increase amount of plage cure and first aid kit
-Fuel Trader : increase fuel rucksack selling,increase amount of naplam or thermite grenade
-Part Trader :Increase amount of part, increase amount of crafting component
-Echo Trader : increase amount of bolt and echo consumable things
-Red Talon Trader : increase amount of item they sell
-Network Trader : add rare facility like espresso machine or water boiler to sell
-Rare Trader : increase respec books selling, add rare facility like espresso machine or water boiler to sell
installation
extract file and put to \AppData\Local\StateOfDecay2\Saved\Paks
Version
3.0.0
-Reduced max items on table for regular allied enclave from 15 to 12
-Decreased any resources on table for regular allied enclave by 50%(because player just spam buying them around)
-There is small chance to has M99 and M203 on regular allied enclave
-Added an exclusive gun on table for each arch enclave (raider uzi/booze) (raider ar15/medic) (raider ak/mechanician)
-Added new rare guns for rare trader
2.0.0
-Added more basic facility mods(mostly for increase storage) to allied enclave's roll
-Added more homemade guns or homemade gun mods to allied enclave's roll
-Added more homemade explosives to allied enclave's roll
-There is very small chance that allied enclave will sell rare books
-Military enclave has more gun type to sells
-Military enclave will have a little chance to sell for rarely guns
-Any traders will have facility mod that increase their resource type storage to sell
-Network trader will have many network's guns to sell
-Redtalon will need prestige for buying their items instead
-Rare books trader also sells community skill books or respec skill books
-Rare trader will have better roll for rare guns
-Part trader will sell more repair tools
1.1.0
-fixed bug medic enclave,booze enclave and mechanic enclave won't update their inventory after finished final mission