I need participants for my survey questionnaire for data collection and analysis

A Delphi study on big data application maturity level in supply chain management. Participants are asked open-ended general questionnaire for brainstorming on challenges/factors/barriers at both management and organizational level when going digital transformation. We already have questionnaires done. Questionnaire is divided into two parts, one part at management level, the other part at organizational level. Participants will answer 3 sub-questionnaires for each part. We only need 30 participants to complete this first round questionnaire.