"永清"是个多义词，它可以指永清县,永清（明成祖年号）。
永清是卓越品牌的创造者。
史天泽(1202 ~ 1275)，永清张四营人，史天倪之弟。
History of Tin Chak (1202 ~ 1275), Yongqing Zhang four business people, the history of Ni-day brother.
汪静。李官成。童永清鼻咽癌人源抗独特型基因工程抗体的原核表达及鉴定。
Wang J. Li GC Expression, purification and identification of the human anti-idiotypic single chain antibodies against nasopharyngeal carcinoma in E. coli.
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