Tech Group design

European Island Civ(British,Spanish,Swedish) Tech Group：
Hand ：
Rank1——Melee Units Hand Attack +10%，Hand Armor +5%
Rank2——Melee Units Hand Attack +20%，Hand Armor +10%
Rank3——Melee Units Hand Attack +30%，Hand Armor +15%
Rank4——Melee Units Hand Attack +50%，Hand Armor +25%

Ranged：
Rank1——Ranged Units Attack +10%，Ranged ROF -2%
Rank2——Ranged Units Attack +20%，Ranged ROF -4%
Rank3——Ranged Units Attack +30%，Ranged ROF -8%
Rank4——Ranged Units Attack +50%，Ranged ROF -16%

Siege：
Rank1——All Units Siege Attack +5%
Rank2——All Units Siege Attack +10%
Rank3——All Units Siege Attack +15%
Rank4——All Units Siege Attack +25%

Infantry：
Rank1——Ranged Infantry Units Hitpoints +16%，Hand Infantry Units Hitpoints +5%
Rank2——Ranged Infantry Units Hitpoints +24%，Hand Infantry Units Hitpoints +15%
Rank3——Ranged Infantry Units Hitpoints +32%，Hand Infantry Units Hitpoints +25%
Rank4——Ranged Infantry Units Hitpoints +48%，Hand Infantry Units Hitpoints +45%

Cavalry：
Rank1——Hand Cavalry Units Hitpoints +5%， Ranged Cavalry Units Hitpoints +15%
Rank2——Hand Cavalry Units Hitpoints +15%，Ranged Cavalry Units Hitpoints +25%
Rank3——Hand Cavalry Units Hitpoints +25%，Ranged Cavalry Units Hitpoints +35%
Rank4——Hand Cavalry Units Hitpoints +45%，Ranged Cavalry Units Hitpoints +55%

Artillery：
Rank1——Siege Units Hitpoints +5%， Artillery Units Speed +0.1
Rank2——Siege Units Hitpoints +10%，Artillery Units Speed +0.2
Rank3——Siege Units Hitpoints +15%，Artillery Units Speed +0.3
Rank4——Siege Units Hitpoints +25%，Artillery Units Speed +0.5

European Continental Civs (Austrian,Prussian,Russian,French)Tech Group：
Hand
Rank1——All Units Hand Attack+10%
Rank2——All Units Hand Attack+20%
Rank3——All Units Hand Attack+30%
Rank4——All Units Hand Attack+50%

Ranged：
Rank1——Ranged Units Attack+10%，Ranged Armor +5%
Rank2——Ranged Units Attack+20%，Ranged Armor +10%
Rank3——Ranged Units Attack+30%，Ranged Armor +15%
Rank4——Ranged Units Attack+50%，Ranged Armor +25%

Siege：
Rank1——Ranged Infantry Units Siege Attack +20%， Artillery Units Siege Attack +5%
Rank2——Ranged Infantry Units Siege Attack +40%， Artillery Units Siege Attack +10%
Rank3——Ranged Infantry Units Siege Attack +60%， Artillery Units Siege Attack +15%
Rank4——Ranged Infantry Units Siege Attack +100%，Artillery Units Siege Attack +25%

Infantry：
Rank1——Infantry Units Hitpoints +10%
Rank2——Infantry Units Hitpoints +20%
Rank3——Infantry Units Hitpoints +30%
Rank4——Infantry Units Hitpoints +50%

Cavalry：
Rank1——Cavalry Units Hitpoints +10%
Rank2——Cavalry Units Hitpoints +20%
Rank3——Cavalry Units Hitpoints +30%
Rank4——Cavalry Units Hitpoints +50%

Artillery：
Rank1——Siege Units Hitpoints +5%， Trainpoints -4%
Rank2——Siege Units Hitpoints +10%，Trainpoints -6%
Rank3——Siege Units Hitpoints +15%，Trainpoints -8%
Rank4——Siege Units Hitpoints +25%，Trainpoints -12%


Mid-West Asian Civs (Ottoman,Persian,Indian) Tech Group：
Hand
Rank1——Melee Units Hand Attack+10%，Move Speed +0.1
Rank2——Melee Units Hand Attack+20%，Move Speed +0.2
Rank3——Melee Units Hand Attack+30%，Move Speed +0.3
Rank4——Melee Units Hand Attack+50%，Move Speed +0.5

Ranged：
Rank1——Ranged Units Attack+10%，Hand ROF-5%
Rank2——Ranged Units Attack+20%，Hand ROF-10%
Rank3——Ranged Units Attack+30%，Hand ROF-15%
Rank4——Ranged Units Attack+50%，Hand ROF-25%

Siege：
Rank1——Hand Cavalry Units Siege Attack +20%， Artillery Units Siege Attack +5%
Rank2——Hand Cavalry Units Siege Attack +40%， Artillery Units Siege Attack +10%
Rank3——Hand Cavalry Units Siege Attack +60%， Artillery Units Siege Attack +15%
Rank4——Hand Cavalry Units Siege Attack +100%，Artillery Units Siege Attack +25%

Infantry：
Rank1——Ranged Infantry Units Hitpoints +5%， Hand Infantry Units Hitpoints +15%
Rank2——Ranged Infantry Units Hitpoints +15%，Hand Infantry Units Hitpoints +25%
Rank3——Ranged Infantry Units Hitpoints +25%，Hand Infantry Units Hitpoints +35%
Rank4——Ranged Infantry Units Hitpoints +45%，Hand Infantry Units Hitpoints +55%

Cavalry：
Rank1——Hand Cavalry Units Hitpoints +16%，Ranged Cavalry Units Hitpoints +5%
Rank2——Hand Cavalry Units Hitpoints +24%，Ranged Cavalry Units Hitpoints +15%
Rank3——Hand Cavalry Units Hitpoints +32%，Ranged Cavalry Units Hitpoints +25%
Rank4——Hand Cavalry Units Hitpoints +48%，Ranged Cavalry Units Hitpoints +45%

Artillery：
Rank1——Siege Units Hitpoints +5%， Siege Units Armor +0.02
Rank2——Siege Units Hitpoints +10%，Siege Units Armor +0.03
Rank3——Siege Units Hitpoints +15%，Siege Units Armor +0.05
Rank4——Siege Units Hitpoints +25%，Siege Units Armor +0.10


East Asian Civs (Ming,Qing,Japanese,Korean)Tech Group：
Hand
Rank1——Melee Units Hand Attack+10%，Bonus vs Heavy Infantry Units +0.1
Rank2——Melee Units Hand Attack+20%，Bonus vs Heavy Infantry Units +0.2
Rank3——Melee Units Hand Attack+30%，Bonus vs Heavy Infantry Units +0.3
Rank4——Melee Units Hand Attack+50%，Bonus vs Heavy Infantry Units +0.5

Ranged：
Rank1——Ranged Units Attack+10%，Bonus vs Heavy Cavalry Units +0.1
Rank2——Ranged Units Attack+20%，Bonus vs Heavy Cavalry Units +0.2
Rank3——Ranged Units Attack+30%，Bonus vs Heavy Cavalry Units +0.3
Rank4——Ranged Units Attack+50%，Bonus vs Heavy Cavalry Units +0.5

Siege：
Rank1——Infantry Units Siege Attack +10%，Artillery Units Siege Attack +5%
Rank2——Infantry Units Siege Attack +20%，Artillery Units Siege Attack +10%
Rank3——Infantry Units Siege Attack +30%，Artillery Units Siege Attack +15%
Rank4——Infantry Units Siege Attack +50%，Artillery Units Siege Attack +25%

Infantry：
Rank1——Infantry Units Hitpoints +8%， Cost -4%
Rank2——Infantry Units Hitpoints +16%，Cost -6%
Rank3——Infantry Units Hitpoints +24%，Cost -8%
Rank4——Infantry Units Hitpoints +40%，Cost -12%

Cavalry：
Rank1——Cavalry Units Hitpoints +8%， Melee Cavalry Units Speed +0.1
Rank2——Cavalry Units Hitpoints +16%，Melee Cavalry Units Speed +0.2
Rank3——Cavalry Units Hitpoints +24%，Melee Cavalry Units Speed +0.3
Rank4——Cavalry Units Hitpoints +40%，Melee Cavalry Units Speed +0.5

Artillery：
Rank1——Siege Units Hitpoints +5%， Cost -4%
Rank2——Siege Units Hitpoints +10%，Cost -6%
Rank3——Siege Units Hitpoints +15%，Cost -8%
Rank4——Siege Units Hitpoints +25%，Cost -12%

Generic
Naval：
Rank1——Ships Hitpoints & Attack+10%
Rank2——Ships Hitpoints & Attack+20%
Rank3——Ships Hitpoints & Attack+30%
Rank4——Ships Hitpoints & Attack+50%

Are you asking for tech suggestions here or just showing the info?

Asking for tech suggestions of course.
This is only my own design,and I waiting for other's ideas.