MANILA, Philippines -- (UPDATE 2) Health officials have found melamine in two out of 30 milk products from China that have been tested for the industrial chemical at the center of China's latest food-safety scandal.

Health Secretary Francisco Duque III identified the brands Friday as Greenfood Yili Fresh Milk and Mengniu Drink, which have already been found to be contaminated in tests in China.

Duque said the 28 other products have been cleared for sale and 200 more were being tested. Additional results may be released early next week.

The government halted the importation and sale of Chinese milk products pending inspections last week after melamine-tainted milk was blamed for four deaths and kidney stones and other illnesses in 54,000 children in China.

Duque said one large supermarket has been charged for violating the ban and authorities were inspecting another.

Duque said he has ordered hospitals to report children with renal problems who may have been drinking milk from China, but that none has been reported so far.

The new regulations require exporters from such countries as Australia and New Zealand to disclose where their milk came from before shipping to the Philippines.

If an exporter fails to make a full disclosure, officials will assume the product came from China and ban it, Duque said.

The 28 products that tested negative for melamine are:

1. Anchor Lite Milk
2. Anlene High Clacium Low Fat Milk U.H.T. (recombined)
3. Bear Brand Instant
4. Chichok Milk Chocolate
5. Farmland Skim Milk
6. Jinwei Drink
7. Jolly Cow Pure Fresh Milk
8. Kiddie Soya Milk Egg Delight
9. Lactogen 1 DHA Infant Formula
10. M&M?s Milk Chocolate Candies
11. M&M?s Peanut Chocolate Candies
12. Milk Boy
13. Nestogen 2 DHA Follow-up Formula
14. Nestogen 3 DHA Follow-up Formula
15. Nido 3+ Prebio with DHA
16. Nido Full Cream Milk Powder
17. Nido Junior
18. No-Sugar Chocolate of Isomaltooligosaccharide (Cocoa Butter Substitute)
19. Nutri Express Milk Drink
20. PURA UHT Fresh Milk
21. Snickers Fresh Roasted in Caramel & soft Nougat in Thick Milk Chocolate
22. Vitasoy Soya Hean Milk
23. Wahaha Orange
24. Wahaha Yellow
25. Want-Want Milk Drink (Red Can)
26. Windmill Skim Milk Powder
27. Yinlu Milk Peanut
28. Yogee Yoghurt Flavor Milk Drink