所有正规出版的普通图书版权页都有ISBN号,ISBN是international standard of book number 几个英文字母的缩写,即国际标准书号。它由10位数字组成,这10位数字由组号、出版者号、书名号、校验号这四部分组成,其间用“--”相连。 ISBN号是由10位数字组成,共分四段 ...
BEIJING, Sept. 13 (Xinhua) -- China has unveiled an action plan to promote the opening up of certification and accreditation, and further deepen the reform of the industry, the country's top market ...
BEIJING, Sept. 12 (Xinhua) — Chinese President Xi Jinping on Thursday sent a congratulatory letter to the 2024 China International Fair for Trade in Services (CIFTIS).