The Blossom website is a bit vague. As I understand it until 2012 Blossom skis were manufactured in a business unit at Via Sandro Pertini, 9, 23020 Prata Camportaccio. Google Street View still has a photo.
If you look at the 2nd of these 2 videos you will see the green window film at 1:29
https://www.youtube.com/user/TheSLsport
As I said in my first post the current factory is located on an industrial estate to the south of Gordona the address is; Via al Piano, 38, 23020 Gordona, this is screenshot from Google Street View:
It is 6km from the previous factory in Prata Camportaccio and 2.7 km from the former Spalding factory in Gordona.
According to an article in the Italian newspaper La Republica
https://ricerca.repubblica.it/repub...ndo-thoeni-vinceva-tutto-volando-su-quei.html there were 2 Persenico ski factories in Chiavenna the first one Società Anonima Raimondo Persenico was opened in 1908 and was a “small artisan factory with few pretensions” that made alpine skis, ski poles and snowshoes. In the 1930s the company moved to another site in the center of Chiavenna, the factory is reported as being an “elegant three-bay building on the banks of the Mera river”. The company also changed its name at this point to Persenico Fratelli Carlo and Alfredo. These 2 buildings don’t seem to exist anymore.
Questor bought Persenico Fratelli Carlo and Alfredo in 1968 and moved production to a new purpose-built factory in Gordona in 1973.
At its peak the Spalding factory in Gordona employed 500 people and produced 3.4 million pairs of skis p.a. making it the fifth largest producer of skis in the world at that time. This building still exists and has been refurbished and divided into business units, Blossom wouldn't have been able to use it because of the fire that occurred in 2000.
It is of course possible that Blossom used another building before moving to Via Sandro Pertini, but I haven’t been able to discover any record of it.