华大 3,3'-二氨基二苯砜 599-61-1 合成聚砜类聚合物厂家

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Hubei Huada Fine Chemical Co., Ltd

Address:Jiahai Mingyuan, Jiang'an District, Wuhan City, Hubei Province
Tel:18086656505

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18086656505

华大 3,3'-二氨基二苯砜 599-61-1 合成聚砜类聚合物 厂家