Ebay Api Get Product Detail by ProductId/ItemId

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Hi every one,
I am using ebay finding service api,
In my project requirement is such that while showing products we are saving product ids and Item Id in my database . now on another page we are displaying these saved products.
we are not saving any other information in my database except product Id and ItemId, rest all information we need to get it from Ebay api by making call again.
Like Amazon ItemLookup request , In ebay how to get all productID or ItemID related information. I know FindItemsByProductRequest but that works only for single productId in one request. One more thing which I don't want is that i want information of requested productID/ItemID but in response it returns default 100 products which are related to this productID instead of this it should return information of requested Products.
Like amazon ItemLookup i want to make request for a number of productIDs(On Amazon known as ASIN) all together. Instead of passing string i want to pass string[] (Array) of product Ids .
In response i want information of these requested product Ids only.
Any help will be much appriciated.
Thanks in advance.

I have posted already on ebay forum but not getting reply from any.
reference on ebay:

https://go.developer.ebay.com/developers/paypal/forums/private-forum/ebay-search-produts[^]