The liability of the seller for damage is excluded as long as it does not concern loss of life, bodily injury or damage to health which are based on a careless breach of duty on the part of the seller or a deliberate or negligent breach of duty on the part of the seller's legal representatives or vicarious agents, and/or as long as it does not concern other damages which are based on a gross negligent breach of duty on the part of the seller or the careless breach of duty or a gross negligent breach of duty on the part of the seller's legal representative or vicarious agents.