On behalf of the organizing committee, I would like to invite you to participate in the 6th International Conference on Nanoscience and Technology, China 2015 (ChinaNANO 2015) which will be held between September 3-5, 2015 in Beijing, China. This is the sixth conference following the successful ChinaNANO 2005, ChinaNANO 2007, ChinaNANO 2009, ChinaNANO 2011 and ChinaNANO 2013 held in 2005, 2007, 2009, 2011 and 2013 in Beijing, respectively. ChinaNANO 2015 is intended to stimulate discussions on the forefront of research in nanoscience and nanotechnology. The conference will focus on carbon nanomaterials, inorganic nanomaterials and MOFs, self-Assembly and supramolecules, nanocomposites and applications, energy and environmental nanotechnology, nanophotonics and optoelectronics, nanodevices and nanosystems, nanobiotechnology and nanomedicine, nanocharacterization and metrology, modeling and simulation of nanostructures, as well as environment, safety and health of nanomaterials. We sincerely hope that the scope of the conference will serve the interest of the scientific community, as well as the industry and the general public. I wish to extend my welcome to all participants and sponsors of the event.