Founded in 1880, the American Society of Mechanical Engineers (ASME) is a not-for-profit professional organization with more than 130,000 members that enables collaboration, knowledge sharing, and

The CXSTAR E - book Platform is developed by Beijing CXSTAR Information Technology Co., Ltd. This platform has in - depth cooperation with publishers.

Superstar Group, established in 1993, is the world's largest provider of Chinese digital book resources.

EBSCO is one of the earliest companies in the world to launch an online full-text database retrieval system.

Optica Publishing Group (formerly OSA）offers the largest collection of peer-reviewed optics and photonics content.

The Oxford English Dictionary Online offers users the most complete, up-to-date, and extensive dictionary from Oxford.

Science has been at the center of important scientific discovery since its founding in 1880—with seed money from Thomas Alva Edison.

Scite goes far beyond just open-access articles.

Web of Science is the world's most trusted, publisher-independent global citation database. Guided by the legacy of Dr.

中文在线（www.ChineseAll.com）2000年成立于清华大学，是中国网络出版的开创者之一，为国内最领先的正版数字内容传播机构。