Cheng Ying

Chroma is the largest worldwide provider of power testing instruments and systems including programmable AC Power Sources and DC Power Supplies, AC Loads and DC Electronic Loads, Digital Power Meters, MultiMeters, and Automated Testing Systems. Their programmable power supplies, electronic loads, measurement instruments and automated testing systems provide solutions for applications in Aerospace, Defense, Military, Automotive, Medical, Battery, Solar, Marine, and Regulatory Testing. Customized systems and instrumentation for power supply test and characterization include architecture and platforms built to fit diverse bench-top, R&D, design verification and automated test system technical requirements and specifications. Applications include testing of battery chargers, DC-DC converters, ATX and other types of AC power supplies, batteries, fuel cells, photovoltaic arrays and point-of-load voltage regulators. With offices and manufacturing facilities located worldwide, Chroma is renowned for it's commitment to excellence in product, service, and innovation. Chroma Systems Solutions, Inc. corporate office is located in Lake Forest, CA.

EVT Technology Co., Ltd. supplies electric pocket bikes and street bikes to Western Europe, Australasia, and Eastern Europe countries. The firm’s products include electric scooters, e-scooter electrification kits, and electric vehicle power train solutions. It produces parts for electric scooter use such as motor, controller, charger and converter. The company was founded in August 1999 and is headquartered in Taoyuan Hsien, Taiwan.