PMA vs PWR

PMA Graphene Technology Group Inc.

PMA Graphene Technology Group Inc. is a Hong Kong-based company mainly engaged in wet trades works, such as plastering works, tile laying works, brick laying works, floor screeding works and marble works. The Company conducts its wet trades works business through its two wholly-owned Hong Kong operating subsidiaries, MS (HK) Engineering Limited and MS Engineering Co. Limited. MS (HK) Engineering Limited is a registered subcontractor and a registered specialist trade contractor under the Registered Specialist Trade Contractors Scheme of the Construction Industry Council and undertakes both private and public sector projects, while MS Engineering Co. Limited mainly focuses on private sector projects. The Company also conducts graphene thermal management technology activities through its subsidiary, PMA Nano Carbon Technology Pte. Ltd.

Quanta Services Inc.

Quanta Services, Inc. provides specialty contracting services worldwide. The Electric Power Infrastructure Solutions segment engages in the design, construction, upgrade, repair, and maintenance of electric power transmission and distribution infrastructure and substation facilities; energized installation, maintenance, and upgrade of electric power infrastructure; installation of smart grid technologies on electric power networks; and design, installation, maintenance, and repair of commercial and industrial wirings. This segment also offers other engineering and technical services; emergency restoration services; engineering and construction services for the switchyards and transmission infrastructures; engineering and construction services related to micro-grids and battery storage; design and construction solutions to wireline and wireless communications companies and cable multi-system operators; aviation services; and training for electric workers, and gas distribution and communications industries. The Underground Utility and Infrastructure Solutions segment provides design, engineering, construction, upgrade repair, and maintenance services to customers involved in the transportation, distribution, storage and processing of natural gas, oil and other products; pipeline protection, integrity testing, rehabilitation and replacement; catalyst replacement, high-pressure and critical-path turnaround, instrumentation and electrical, and piping, and fabrication and storage tank services; engineering and construction services for pipeline systems, storage systems, and compressor and pump stations; fabrication of pipeline support systems and related structures and facilities; trenching, directional boring, and mechanized welding services; and construction services for the offshore energy market, as well as designs, installs, and maintains fueling systems and water and sewer infrastructure. The company was incorporated in 1997 and is headquartered in Houston, Texas.