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Albany International Corp., together with its subsidiaries, engages in the machine clothing and engineered composites businesses. The company operates in two segments, Machine Clothing (MC) and Albany Engineered Composites (AEC). The MC segment designs, manufactures, and markets paper machine clothing for use in the manufacturing of papers, paperboards, tissues, towels, pulps, nonwovens, building products, tannery, and textiles, as well as fiber cement and several other industrial applications. This segment offers paper machine clothing forming, pressing, and drying fabrics, as well as engineered processing belts; and engineered fabrics. The AEC segment 3D-woven and injected composite components for aircraft engines composite airframe and engine components for military and commercial aircraft. It operates in the United States, Switzerland, France, Brazil, China, Mexico, Germany, and internationally. The company was incorporated in 1895 and is headquartered in Rochester, New Hampshire.

PowerShares Build America Bond Portfolio (the Fund) seeks investment results that correspond generally to the price and yield performance of an index called The BofA Merrill Lynch Build America Bond Index (the Index). The Fund will normally invests at least 80% of its total assets in the securities that comprise the Index. The Index is designed to track the performance of the United States dollar-denominated Build America Bonds publicly issued by the United States and territories, and their political subdivisions, in the United States market. The investment advisor of the Company is Invesco PowerShares Capital Management LLC.

ESCO Technologies Inc. produces and supplies engineered products and systems for industrial and commercial markets worldwide. It operates through three segments: Aerospace & Defense, Utility Solutions Group, and RF Test & Measurement. The Aerospace & Defense segment designs and manufactures filtration products, including hydraulic filter elements and fluid control devices used in commercial aerospace applications; filter mechanisms used in micro-propulsion devices for satellites; and custom designed filters for manned aircraft and submarines. It also designs, develops, and manufactures elastomeric-based signature reduction solutions for U.S. naval vessels; and mission-critical bushings, pins, sleeves, and precision-tolerance machined components for landing gear, rotor heads, engine mounts, flight controls, and actuation systems for the aerospace and defense industries. The Utility Solutions Group segment provides diagnostic testing solutions that enable electric power grid operators to assess the integrity of high-voltage power delivery equipment; and decision support tools for the renewable energy industry, primarily wind and solar. The RF Test & Measurement segment designs and manufactures RF test and secure communication facilities, acoustic test enclosures, RF and magnetically shielded rooms, RF measurement systems, and broadcast and recording studios; and RF absorptive materials, filters, antennas, field probes, test cells, proprietary measurement software, and other test accessories to perform various tests. The company distributes its products through a network of distributors, sales representatives, direct sales teams, and in-house sales personnel. The company was incorporated in 1990 and is based in Saint Louis, Missouri.

Scienjoy Holding Corporation provides mobile live streaming platforms in the People's Republic of China. The company focuses on interactive show live streaming from broadcasters to users. Its platforms enable users to view and interact with broadcasters through online chat, virtual items, and playing games. The company operates live streaming platforms under the Showself Live Streaming, Lehai Live Streaming, Haixiu Live Streaming, BeeLive Live Streaming, and Hongle Live Streaming names. It also offers technical development and advisory services. The company was founded in 2011 and is based in Hangzhou City, the People's Republic of China.