His gang was after a man named Chuck Marstein who was a bookkeeper for their illegal businesses but eventually stole from them. However, Chuck was being protected by SAMCRO. Lin and Clay eventually came to an agreement over this - SAMCRO handed Chuck over and the Triad paid SAMCRO $60,000 in cash.
Lin later traded Chuck back to SAMCRO in negotiations to get new guns from Clay. Lin is likely the one who chopped off most of Chuck's fingers, leaving just one finger on each hand. Lin met with Clay and told him that he needed guns and would pay double. In the episode "Fa Guan," Lin makes a deal with Clay - if Clay can get a case thrown out, Lin would open a pipeline for him.
Henry along with Laroy ally with the Sons of Anarchy MC against the Leauge of American Nationalists. (Who had allied with the Mayans MC, Nordics, and Aryan Brotherhood) The Lin Triad and One-Niners provided back-up for Jax's and AJ Weston's fight in Charming. Prior to the alliance with the SOA, both Henry and Laroy were losing territory and trade to the Mayans.
Henry paid for the time and services of the CaraCara girls; including Lyla. For a meeting with rich foreign Asians. The transaction fell through however, when Opie became jealous of Lyla and another guy.