In order to continuously improve our service quality and optimize user experience, the system has a built-in feedback system. This system is designed to respond to valuable comments and suggestions from users to continuously improve our products and services.
Consultation on system operation issues
If you encounter any operational problems or have any usage suggestions, you can provide feedback through the feedback system and we will respond as soon as possible. You can click on the green conversation tab in the lower right corner of any page to open the feedback page, or you can view our responses on the bell tab in the upper right corner. 
The feedback page requires you to describe the problem or your suggestions in detail so that we can locate and solve the problem more quickly and accurately. You can also provide more information by uploading pictures. 
Consulting on business and trade audit issues
Business and trade audits are divided into two categories: non-EU business and non-EU trade audits; EU business and EU trade audits
Non-EU businesses and non-EU trade audits
PetroChina
EU Business and EU Trade Review
Only Representative Information under EU REACH Regulation:
PetroChina International (Netherlands) Company B.V.
Registered address: Vasteland 78, HNK Rotterdam Scheepvaartkwartier, 3011BN Rotterdam, Netherlands
Telephone number: +31 010 215 1245
Email: reach@petrochinaintl.nl
Only Representative Information under UK REACH Regulation:
PetroChina International (London) Co., Limited
Registered address: The Adelphi, 1-11 John Adam Street, London, WC2N 6HT, United Kingdom
Telephone number: +44 0207 010 8700
Email: reach@petrochinaintl.co.uk
If you have any questions, please contact the relevant sole representative.