Zhejiang Bestwa EnviTech Co., Ltd

Building A, 8F-9F, 319 Xiangyun Rd., Yuhang District, Hangzhou, Zhejiang, China

Tel.:+86 571 87560756

Fax:+86 571 87671477

Email:info@bestwa.com

Web:m.52huaxue.com.cn

Bestwa EnviTech Germany GmbH

Vincentistr. 21

76530 Baden-Baden，Germany

Tel.:0049 7221/1858310

Fax:0049 7221/1858983

Email:info@bestwa.de

Web:m.52huaxue.com.cn/en