The registered address of shan donghua chemical technology ltd. Is located on the second floor of the zinan materials trading centre, located in the tiannam sky bridge area, shandong province; on the second floor of the zinan material trading centre; on the second floor of the zinan technology promotion service; on the other hand, on the other hand; on the other hand, on the other hand, on the other hand, on the other hand; on the other hand, on the other hand, on the other side; on the other hand, on the other hand; on the other hand, on the other hand, on the other hand, on the other hand, on the second floor of the zinan materials trading centre; on the other hand, on the other hand, on the other hand; on the other hand, on the other hand, on the other hand, on the other hand, on the other hand; on the other hand, on the other hand, on the other hand, on the other hand, on the other hand, on the other hand; on the other hand, on the other hand, on the other hand, on the other han...