In my opinion, PL16 is NOT an advance variant of PL15 since it does match with the common naming terminologies used by Chinese military.
I believe that PL-16 in fact is a new missile of its own with specific parameters.
I've mentioned this over a month ago.
No one is asking you to reveal anyone's identity, we do not care that much.
What I am confused about is that you earlier claimed CATIC had not ordered any part for J-35 as your friend had told you this. You now state that he does not know details.
So essentially we agree that the word of your friend, whoever he may be, cannot be counted as a reliable source when it comes to CATICs ordering of parts for a sensitive military programme.
Hence it is more then entirely feasible, as some members have pointed out, that an order has been made.
Also, I am aware English is not your first language, but may help your argument by keeping replies shorter and to the point.
There are two scenarios here. Chinese manufacturing runs on fast speed. Their pulse manufacturing where a J-20 like complicated build is done on average 4 days per jet, requiring massive parts inventories to exist much in advance. If you are producing 100+ jets per year, that's estimated 8 Jets per month and that also super complicated 5th gen, you can't afford to wait for "parts orders" to arrive. The orders are done a year+ in advance under "pulse" manufacturing or in the West we call it "dynamic supply chain".
Now, we know that Chinese target for 2025 for J-35 is near 40 aircraft. This is also using current supply chain and manufacturing. For next year, the estimates I heard are ~70 production aircraft. End of 2026 or in 2027, a pulse production line for J-35 will start moving towards 100+ aircraft production annually.
Now, if next year's target is ~70 aircraft, all parts have been ordered and will be received and computer tagged in the inventories, this year before the year ends. Similarly, any 3-d printing requiring for manufacturing will be done now. You can't print-manufacture parts when you are producing one jet in 4-6 days.
Now, for Pakistan, *if* we get anything in 2026, it will be around 10 aircraft or less, as batch 1, since the priority is PLAAF and PLAN. There are a few things different in the "P" version compared to the standard PLAAF version. Those are essentially Radars with export power, some sensors and possibly different engines. How hard is it for the Chinese manufacturing to give out 10 existing radars with just reduced output for export models? If that's the case. Similarly, Chinese system builds hundreds of engines annually. If different, Ten engines or less can be provided immediately. Every manufacturer keeps an inventory of products.
Now, Pakistan's product build, the J-35E or "P", can be built under another type of manufacturing that is very popular in the US as well as in China. It's called "JITM" or "Just in Time Manufacturing". You source the differential parts right before you start the build. Getting just 10 engines from an engine manufacturer and 10 Radar sets (that is, if these are truly different), is a piece of cake for a system like China. And if the Radars are the same or engines are the same, we'll just be given the first batch from the production line either way.