the stockbrokers deal with securities in the stock market. if you want to deal with commodities, you have to check with international banks like Citibank, HSBC, Standard Chartered, etc. Or you can check Central Bank.

Bangko Sentral ng Pilipinas
(Central Bank of the Philippines)

Have you checked with your local bank manager lately? You would be surprised at what some of these bank managers for bigger bank mangers like Philippines National Bank (PNB), Metrobank, Citibank, HSBC, Bank of the Philippines (BPI) and like banks know. Get to know your bank manager. Many of these good people surround themselves with circle of friends who have financial contacts that have become very successful.

You should consult those at the PSE. The PSE is somewhere in Makati. Consult the phone book.