Heilongjiang Semiconductor-Radio Factory; Harbin (Heilongjiang, NE) 黑龙江半导体收音机厂:

Hēi​lóng​jiāng​ 黑龍江, trad. 黑龙江 or Hēi​lóng​jiāngshěng​ 黑龍江省 (shěng​ 省 = province):​ The province Heilongjiang (Heilungkiang) is in Northeast China (NE), abbr. 黑. The capital is Harbin 哈尔滨. The Heilongjiang river is forming the border between northeast China and Russia, also called Amur river.
半导体收音机厂 (Semiconductor-Radio Factory) = Bàn​dǎo​tǐ 半导体​ trad. 半導體 = semiconductor; Shōu​yīn​jī​ 收音机 trad. 收音機 = radio; Chǎng​ 厂 trad. 廠 = Factory (yard / depot / workhouse / works / (industrial).
This manufacturer is always written with the province name in front and can be written as Possibly it can also be written as 龙江省半导体收音机厂 or as 黑龙江半导体收音机厂 - with or without the character for "province".

Brands:
Songhuajiang 松花江, English = SUN GA RI or Songhua River.

History:
This factory was formed in 1960: The semiconductor research laboratory and radio research staff of "Harbin Xinsheng Switch Factory" was the base to set up Heilongjiang Semiconductor-Radio Factory 黑龙江半导体收音机厂. The goal was to produce the first "all Chinese" transistor radio.

Before, "Harbin Xinsheng Switch Factory" 哈尔滨新生开关厂 (actually called: Harbin Xinsheng Kaiguan Factory) had to develop it, starting in Summer 1958 (xīn​shēng​ = "newborn"). Then "Heilongjiang Semiconductor-Radio Factory" became the order to build it in series. This "Songhuajiang 松花江 601" won the first price in the China competition for good radios. There is also some followers like 601A etc.

Heilongjiang Semiconductor-Radio Factory; Harbin has been renamed in 1970 to "Harbin No. 4 Radio Factory".