Specialty Additives for Plastic Resins Arbor Plastic Technologies (APT) provides specialty additives and associated delivery systems for the plastic resin industry. Our technology increases both productivity and quality, resulting in lower costs for our customers. Our unique product technology also limits exposure to high temperatures and thermoplastic binders that are detrimental to overall quality, enabling us to provide the highest loadings of active ingredients in the industry. APT's products are the perfect answer to the Plastic Industry's need for process improvement and quality enhancement, providing opportunities to protect or improve business margins.