供需

gōng xū supply and demand

信息

xìn xī information; news; message

查询

chá xún to check; to inquire; to consult (a document etc); inquiry; query

官

guān government official; governmental; official; public; organ of the body; CL:個|个[ge4]

Guān surname Guan

网

wǎng net; network

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