excavating services; namely, hydraulic and vacuum excavation services for gas, oil, petrochemical and industrial plants, pipeline construction, piling installations and tunneling installations

Promoting the interests of HVAC and plumbing businesses by means of an association; Promoting the business or commercial interests of HVAC and plumbing businesses by means of a membership association; Business administration and management; Operation of a business for others, namely, HVAC and plumbing businesses; Advisory services relating to business management and business operations

Promoting the interests of HVAC and plumbing businesses by means of an association; Promoting the business or commercial interests of HVAC and plumbing businesses by means of a membership association; Business administration and management; Operation of a business for others, namely, HVAC and plumbing businesses; Advisory services relating to business management and business operations