I found this on a google search of "nylon 1010 resin." Dongchenchem Company. The page came up unavailable, but if you hit the google "cached" icon, it comes up with some information. I cannot tell if they manufacture the resin, though, or if they mold it into products. It seems the majority of hits on google are from chinese or other asian companies. I also found on google a chinese company that markets sebacic acid, apparently a reactant in the manufacturing of Nylon 1010. Hengshui Dongfeng Chemical Co.Ltd. You may be able to find out who from them who buys their acid.
ChemE, M.E. EIT
"The only constant in life is change." -Bruce Lee