You can get nitro lacquer in Canada a lot easier than you can in the US. A guitar builder friend gets it from a paint dealer in town. He used to get it from a place that deals in cabinetmaker supplies, but they stopped carring it.
Due to VOC regularions in the US, it is next to impossible to get nitro in almost all states.
Funny story: In and around 2004-2005, I went to the Healdsburg guitar festival with my guitar making buddy. This is one of the biggest shows in the world for high to impossibly high end hand-built guitars (so no Martin, Tayolor, Guild, Gibosn, Larrivee, etc.). Upwards of 120 hand builders brought various numbers of guitars. Anyway, I amlking around admiring a lot of the guitars, noting that some were Canadaian, a few from Europe, and a much shmaller number from places like South Africa. I asked my guitar making buddy if he knew how many were from Canada. He said he didn't, but it would be easy to find out. I didn't have any idea of what he was talking about. He told me to look for the really, really shiny guitars at the show. Those would be nitro, and were from non-US builders. Then from that group, we could figure out which were Canadian or other. Easily cut the number down by 80-85%. Due to the VOC regulations in the US, almost all of the builders from the US were using water based lacquer, or catalysed lacquer, which, no matter how you polised it out, never shines up as well as nitro.
For a lot of glues/adhesives, the problem is transport regulations, air transport being one of the most tightly regulated.