selling and promoting image-guided surgery products, medical imaging and informatics industry and medical products, computer software for image-guided surgery, medical imaging and informatics integrated treatment planning and delivery systems and optical tracking systems; providing technical support services for image-guided surgery, medical imaging and informatics industry products and medical products, computer software for image-guided surgery, medical imaging and informatics, integrated treatment planning and delivery systems and optical tracking systems technical support, namely, the provision of installation and warranty service for computer hardware and software for medical, surgery and radiology purposes, image-guided surgery, medical imaging and information products and medical products; and application support, namely the provision of training and software support for computer hardware and software for medical, surgery and radiology purposes, image-guided surgery, medical imaging and information products and medical products; contract engineering and clinical development, market support and after sales services