The approval comes five months after LG Display announced it would invest in large-size OLED production in Guangzhou, China, to respond to fast-growing demand for the screens in TVs in overseas markets.
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The ministry said in a statement that the approval was conditional on LG Display boosting the use of local materials and equipment, subsequent investment in South Korea and strengthening processes such as security checks.
An LG Display spokeswoman did not have an immediate comment.
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