T139, The Achievements in Socialist Construction (3nd Series)《社会主义建设成就（第二组）》

Stamp Title: The Achievements in Socialist Construction (3nd Series)
Serial number: T139
Values in set: 4
(4-1), Beijing Internation Telecom, 8 fen, 27*40 mm
(4-2), Shanxi Gujiao Xiqu Colliery, 10 fen, 40*27 mm
(4-3), Qinghai Longyangxia Power Dam, 20 fen, 40*27 mm
(4-4), Dayang Mountain Railway Tunnel, 30 fen, 40*27 mm
Date of issue: August 10, 1989
Denomination: 68 fen
Designers: Chen Xiaocun
Size of stamps:
Value 1: 27*40mm; Value 2,3,4: 40*27mm
Perforation: 11
Sheet composition:
Vakue 1:50(10*5); Value 2,3,4:50(5*10)
Printing process: Photogravure
Printing House: Beijing Postage Stamp Printing Works

After the founding of the PRC, the CPC led the nation to make constant progress: triumphing over repeated threats, sabotages and armed provocation of imperialists and hegemonists, safeguarding the nation’s independence and security; successfully achieving a great transfer of the Chinese society from new-democratism to socialism, accomplishing, in a general sense, the socialist transformation of the private ownership of the means of production; and launching the large-scale socialist economic construction in a planned way, and enabling Chinese economic and cultural causes to attain unprecedented development.

Beginning in 1979, China introduced reforming policies advocated by Deng Xiaoping and opened its door to the outside world. The “left deviation” errors made during the “cultural revolution” and before were redressed, and the focus of the work was shifted to the modernization drive. Great efforts were made to regulate the proportions within the national economy, reform economic and political systems and gradually establish a road to build socialist modernization with Chinese characteristics. The past two decades have witnessed substantial changes in China. It is the best period that China has ever experienced since 1949 and also the period when the people of China received the most substantial benefits.

T139 社会主义建设成就（第二组）
（1） 8分，北京国际电信局，2273.90万枚。
（2）10分，山西古交西曲煤矿，2006.90万枚。
（3）20分，青海龙羊峡水电站，2128.15万枚。
（4）30分，衡广复线大瑶山隧道1693.90万枚。
发行日期：1989.8.10。影写版。P11。印刷：北京邮票厂。
（1）27mm×40mm、50（10×5）。
（2-4）40mm×27mm、50（5×10）。
[Ph]沈家和、乔文涛、李界范、王连甲。设计：陈晓聪。

4-1 为“北京国际电信局”。北京国际电信局安装有先进的程控电子交换设备，并通过微波通信手段，同邻近的两座卫星地面站联通，电信信号可通过卫星传递到世界各地。
4-2 为“山西古交西曲煤矿”。西曲煤矿是利用日本能源贷款，由中国自行设计、自行施工的一座现代化大型矿井。
4-3 为“青海龙羊峡水电站”。水电站位于黄河上游的龙羊峡谷进口处，是黄河流域规划中的第一个梯级电站。
4-4 为“衡广复线大瑶山隧道”。隧道工程1981年11月开工，1987年4月顺利贯通，全长14.29公里，是目前中国最长的双线铁路隧道。