FRANKLIN, Mass. /Massachusetts Newswire – National News/ — RYPOS, Inc., a developer, and manufacturer of advanced exhaust filtration systems that reduce harmful emissions from diesel engines, is pleased to announce the first shipments of their Rypos DPF for Carrier X4 series Transport Refrigeration Units. A fleet located in Central California received the first shipment of filters in January and production is ramping up to meet an increase in early sales. The X4 is the most cost-effective way to meet CARB’s Level 3+ PM reduction standards. The active DPF monitors time and backpressure and automatically initiates regeneration requiring no driver intervention while ensuring that the filter is clean independent of exhaust temperature.