d2w® Authorized Manufacture is the certified user of d2w® additive who has passed the quality assurance and testing by Symphony Environmental Ltd. and thus can be approved of manufacturing products that meet the standards prescribed by ASTM 6954.

How to become d2w® Authorized Manufacturer

To become the d2w® Authorized Manufacturer, the Confidentiality Agreement has to be signed; d2w® Technical Enquiry Form(see Document Library)has also need to be properly filled up for Symphony Technical Team to advice the correct additive grade for d2w® Trial. After d2w® Trial, the trial samples will be sent by courier back to UK for testing to verify whether the trial result is satisfactory. For more information, please go to Certification Program

Currently, d2w® Authorized Manufacturers cooperating with D2W@ASIA(www.d2w.asia) are located in China, Taiwan, Vietnam, Japan, and South Korea. The total number of d2w® Authorized Manufacturers has reached hundreds and cover more than 50 product applications.