PLM <PLMA> UNIT ENDS MERGER TALKS PLM Cos Inc said its PLM Power Co unit broke off merger discussions with Sunlaw Energy Corp of Beverly Hills, Calif. In January PLM Power entered into a letter of intent to negotiate a potential acquisition of Sunlaw, subject to substantial due diligence, the company said. But it also said the two companies were not able to agree on mutually satisfactory final terms and conditions.