激情毛片无码专区,色丁狠狠桃花久久综合网,国产A∨国片精品青草视频,精品无码一区二区三区在线

  中文版 - ENGLISH
 
Top Products
Contact Us
Manufacturing base:
NO. 16, Guangtong Road, Longquan Town, Zichuan District, Zibo City, Shandong, China
Oversea Sales:
Tel: 86-532-86959667 Fax: 86-532-86760085
E-mail: sales@changyuintl.com
Domestic Sales:
Tel: 86-533-5860002、86-533-5860039 Fax: 86-533-5860296
E-mail: gtsales@changyuintl.com
Branch
 Qingdao Guangtong Biotechnology Development Co., Ltd.

Qingdao Guangtong Biotechnology Development Co., Ltd is a biotechnology company located in No. 27, London Road, QingdaoFree Trade Zone. The company was invested by Zibo Guangtong Chemical Co., Ltd in 2002. With strong researching, manufacturing and marketing ability, the company mainly focuses on researching, producing and marketing of long chain dicarboxylic acids and its downstream products. 

 
Copyright(C)2015 , Shandong Guangtong New Materials Co., Ltd. All Rights Reserved.  Supported by  ChemNet  ChinaChemNet Toocle Copyright Notice