亚洲人妖ts网站,夜夜春亚洲嫩草影院,欧美变态深喉囗交免费,av福利无码亚洲网站,黄色小说下载,恶魔契约书txt下载,小说免费

  Dongyang Tianyu Chemical Co.,Ltd
   About us
       About us
       Products
       Buy
       Sell
       Contact us

The company is mainly engaged in developing, producing and selling fine chemicals, pharmaceutical and pesticide intermediates such as sodium azide, barium azide, phenyl isothiocyanate and 1-phenyl-5mercapto terazatle etc.. Products are widely used in the fields including medicine, pesticide synthesis, automobile safety device, photosensitive material, plating and auxiliaries etc..

Shanghai Danfan Network Science&Technology Co., Ltd. All Rights Reserved.