If you look at the post you quoted, It was Altay's subsystems told above, not Altay itself. There are some source like defencenews pointing out cooperation intention of HIT for Altay subsystems. With this way, It motivate all members from each side to compare minus/plus sides of both companies on their own ruling technologies to be benefical for Pakistan so Nothing strange to talk about them. Live with it or not, Personally don't care !
It is known that Russia don't have such critical component technologies to be used on their own and wellknown platforms If nothing changed within 2-3 years. Russian members can also enlighten the thread regarding this issue. It is also impossible to succesfully develop those critical subsystems in such a short time. If you look at their upgrade solutions for attack helicopters for example, They offers foreign thermal and FLIR's for costumers. Thermal issue is a problem for Russians. Turkey ordered Kornet ATGM in past years but Turkish army did not satisfy sight performance of Kornets, especially in night conditions so Aselsan developed a new thermal sight system called SAGER which is superior to what Russia produced for Kornets.
About China, I don't know, They may have such detector technologies. I believe Japan and S. Korea have it. Different than those, Franch, Germany, USA, Sweeden, Israel have. Canada also developed 3rd generation Quantum well infrared detectors but I don't know whether they are industrially producing them to point out as supplier, since Producing the detectors on large numbers are more costly and difficult than developing a prototype on labratory scale.
Turkey started development of Quantum detectors in 1999. Today, Aselsan is among those mentioned developers which is able to produce them for own and costumers' requirements. Different type of detectors such as NIR, SWIR are under development phase for spy satellites and other applications.
Monitoring the Ankara with domestic detectors+ Pod
Usage areaes of those detectors are extremely wide from space to tanks, submarines, helicopters, frigates so Exportation of them are restricted with special pemissions.
You can watch all process of QWIP detectors in that video