GB 12052-89, entitled Korean character coded character set for information interchange (Chinese: 信息交换用朝鲜文字编码字符集), is a character set standard established by China for the Korean language in China. It consists of a total of 5,979 characters, and has no relationship nor compatibility with South Korea's KS X 1001 and North Korea's KPS 9566.

Characters in GB 12052 are arranged in a 94×94 grid (as in ISO/IEC 2022), and the two-byte code point of each character is expressed in the qu-wei form, which specifies a row (qu 区) and the position of the character within the row (cell, wei 位).

The rows (numbered from 1 to 94) contain characters as follows:^[1][2]

• 01–09: identical to GB 2312, except 03-04 (￥ in GB 2312, ＄ in GB 12052)
• 16–37: modern Hangul syllables and jamo, level 1 (2,017 syllables and 51 jamo)
• 38–52: modern Hangul syllables, level 2 (1,356 characters)
• 53–72: archaic Hangul syllables and jamo (1,683 syllables and 96 jamo), and 94 Chinese characters

The rows 10–15 and 73–94 are unassigned.

There are some errors in the standard:^[3]

• 41-64: 믃 in the fold-out table, 믌 in the standard proper – should be 믃
• 46-65: 틘 in the fold-out table, 퇸 in the standard proper – should be 틘
• 49-37: 뗸 in the fold-out table, 뎬 in the standard proper – should be 뗸
• 51-82: 윹 in the fold-out table, 율 in the standard proper – should be 윹
• 53-67: ᄀᆈ in the fold-out table, missing in the standard proper – should be ᄀᆈ
• 72-88: missing in the fold-out table, 夞 in the standard proper – should be 夞

Unlike KS X 1001 and KPS 9566, GB 12052

• does not encode jamo in a separate section (see row 4 of KS X 1001 and row 4 of KPS 9566).
• has two levels of precomposed modern Hangul syllables.

However, like KS X 1001, GB 12052 lacks the initial+vowel counterparts for some initial+vowel+final syllables: