I decided to make it official and point on some facts about the way how accurate and how selective you are producing your model kits.
I can´t ignore anymore the fact that every model kit you are producing has a lot of shape issues or missing details, which have to be solved with additional expensive etched parts from China and Co.
Let´s take an example. Your late D-30 howitzer is a joke and a diret insult to every serious paying modeller. How can you dare to sell it as a "late" version when the muzzle brake stills the same. At your catalogue you have posted a picture for the "late" type #02329 (page 39), using Yugoslav military archives:

It shows an Yugoslav late D-30 howitzer during excercise in 1997.
here´s a picture from the Yugoslav army in 2002, using the same late D-30 howitzer:

here´s my D-30 howitzer, built from SKIF:

and this is your "late" D-30 howitzer



Probably you management can remember, some 4-5 years ago, I wrote to you an E-Mail with a complete list of Soviet / Russian Cold War era vehicles. All the tanks and vehicles you are producing and selling meanwhile are from the list I sent to you. Meanwhile I´m wondering why you still producing 2-3 different Iraqi T-62 tanks, a lot of T-64 tanks and so on. You have never thought about trying to make some serious stuff from the Yugoslav civil war in the 90´s, like the M-84 and M-84A tanks, Yugoslav M-80 and M-80A APC´s or OT M-60.
You never tried to solve the issues with your SA-6 KUB air defence system (chassis or the ridiculous rockets).
What about some different sets for Soviet/ Russian tankers during Cold War era or different sets of Yugoslav army forces in 1/35. But no, you still producing German-Nazi vehicles, airplanes and soldiers from WWII in this version, and that version, at any scale and so on. Who cares for WWII anymore?
If you want to be a serious company, with your meanwhile expensive retail prices, you should take more care for accuracy and about the stuff the people want to build.
Please do not forget, quality is important, not quantity !