diff --git a/lignumis/locale/en/strings.cfg b/lignumis/locale/en/strings.cfg
index a9481d3..0ec7456 100644
--- a/lignumis/locale/en/strings.cfg
+++ b/lignumis/locale/en/strings.cfg
@@ -145,6 +145,7 @@ quality-assembler=Quality assembler
 aai-wood-loader=Wood loader
 basic-ore-crushing=Basic ore crushing
 astroponics-productivity=Astroponics productivity
+experienced-quality-assembling=Experienced quality assembling
 
 [technology-description]
 wood-science-pack=Allows research of basic technologies based on wood products.
diff --git a/lignumis/prototypes/content/quality-assembler.lua b/lignumis/prototypes/content/quality-assembler.lua
index 480868c..0b94e6b 100644
--- a/lignumis/prototypes/content/quality-assembler.lua
+++ b/lignumis/prototypes/content/quality-assembler.lua
@@ -43,7 +43,7 @@ data:extend({
         drop_sound = item_sounds.metal_small_inventory_move,
         stack_size = 50,
         fuel_category = "quality-catalyst",
-        fuel_value = "1MJ",
+        fuel_value = "2MJ",
         weight = 1000 / 50 * kg,
     },
     {
@@ -56,8 +56,8 @@ data:extend({
             { type = "item", name = "tungsten-carbide", amount = 2 },
             { type = "item", name = "supercapacitor",   amount = 2 }
         },
-        results = { { type = "item", name = "gold-quality-catalyst", amount = 2 } },
-        allow_productivity = false,
+        results = { { type = "item", name = "gold-quality-catalyst", amount = 1 } },
+        allow_productivity = true,
         allow_quality = false,
         enabled = false
     }
@@ -76,8 +76,8 @@ QualityAssembler.EntityBuilder:new()
         energy_usage = "1MW",
         crafting_speed = 4,
         module_slots = 6,
-        allowed_effects = { "pollution", "quality" },
-        effect_receiver = { base_effect = { quality = 2.5 } }
+        allowed_effects = { "consumption", "pollution", "quality" },
+        effect_receiver = { base_effect = { quality = 3.5 } }
     })
 
 QualityAssembler.ItemBuilder:new():apply()
@@ -115,6 +115,41 @@ QualityAssembler.TechnologyBuilder:new()
     :additionalRecipes({ "gold-quality-catalyst" })
     :apply()
 
+data:extend({
+    {
+        type = "technology",
+        name = "experienced-quality-assembling-1",
+        icons = {
+            { icon = "__quality__/graphics/technology/legendary-quality.png", icon_size = 256 },
+            { icon = Lignumis.graphics .. "icons/quality-gold-catalyst.png", icon_size = 64, scale = 1, shift = { 50, 50 }, draw_background = true }
+        },
+        level = 1,
+        max_level = 1,
+        show_levels_info = true,
+        effects = {
+            { type = "change-recipe-productivity", recipe = "gold-quality-catalyst", change = 0.25 }
+        },
+        research_trigger = { type = "craft-item", item = "gold-quality-catalyst", count = 1000 },
+        prerequisites = { "quality-assembler" }
+    },
+    {
+        type = "technology",
+        name = "experienced-quality-assembling-2",
+        icons = {
+            { icon = "__quality__/graphics/technology/legendary-quality.png", icon_size = 256 },
+            { icon = Lignumis.graphics .. "icons/quality-gold-catalyst.png", icon_size = 64, scale = 1, shift = { 50, 50 }, draw_background = true }
+        },
+        level = 2,
+        max_level = 2,
+        show_levels_info = true,
+        effects = {
+            { type = "change-recipe-productivity", recipe = "gold-quality-catalyst", change = 0.5 }
+        },
+        research_trigger = { type = "craft-item", item = "gold-quality-catalyst", count = 10000 },
+        prerequisites = { "experienced-quality-assembling-1" }
+    }
+})
+
 local function convert_category(name)
     local quality_name = name .. "-or-quality-assembling"
     data:extend({