The Natural Gas Supply Association (NGSA) and the Center for Liquefied Natural Gas (CLNG) said Thursday that they intend to merge. NGSA represents integrated and independent companies that supply natural gas, encouraging the use of gas within a balanced national energy policy and promoting the benefits of competitive markets. CLNG is a trade association of LNG producers, shippers, terminal operators and developers, and energy trade associations. Following the combination, both organizations will retain their brands, a CLNG spokesperson said.