On behalf of the organizing committee of the 2014 IUPAC World Polymer Congress or MACRO 2014 and the Chemical Society of Thailand (CST) under the patronage of Professor Dr HRH Princess Chulabhorn, it is my great pleasure to extend a warm welcome to you to participate in MACRO 2014 in Chiangmai, THAILAND - The land of smile. The MACRO2014 will provide the unprecedented opportunity for participants to learn the most recent advancement of polymer science and technology, as well as the occasion to bring together the participants from across region and around the world for discussion, collaboration, and networking. Chiang Mai, as called the rose of north, is the land with full of the oriental culture, our participants will have a chance to enjoy our beauty of Thai culture, enjoy shopping and experience Thai food. We are looking forward to giving a warm welcome to you, your family, and colleagues at MACRO 2014 in Chiangmai. We hope that you will find the congress both enjoyable and valuable. We thank you in advance for participating and contributing to the success of the event.