I check our sales record. We had delivered these LV porcelain (for PT and CT) in the following batches:
1) 4,000 sets under our invoice 1528300022 dated 12-Jan-15 (Charoenchai PO no. 1410-00-0008)
2) 155 sets under our invoice 1428300745 dated 25-Nov-14 (Charoenchai PO no. 1408-00-0008)
3) 1,045 sets under our invoice 1428300615 dated 30-Sep-14 (Charoenchai PO no. 1408-00-0008)
4) 2,000 sets under our invoice 1428300349 dated 5-Jun-14 (Charoenchai PO no. 1403-00-0006)
Please help to identify defective porcelains were from which delivered batches. I need this information to lodge a complaint to Comem.