Portal Site on Tariff and ROOs
The APEC Website on Tariff and ROOs Indonesia

This portal website contains of Indonesia’s information on its law, regulations, procedures and administrative rulings relating to tariff and ROOs, includes publication on tariff schedule, with current applied MFN tariff rates, preferential tariff rates and preferential ROOs from FTAs/RTAs such as IJEPA, ASEAN-China (ACFTA), ASEAN-Korea, ASEAN-Australia-New Zealand. 
Tariff?

Customs duties on merchandise imports are called tariffs. Tariffs give a price advantage to locally-produced goods over similar goods which are imported, and they raise revenues for governments. The integrated Tariff of Indonesia is usually reffered to as Tariff and contains all the information to help us  with importing or exporting, which it includes references to the relevant laws and regulations.
Rules of Origins (ROOs)?

ROOs are laws, regulations and administrative practices used to identify the country of origin of internationally traded goods. The nationality of most products is ambiguous because intermediate trade in inputs means that the value-added in the production of goods is split between two or more countries. Increased globalisation of production has raised both complexity of origin issues and the profile of ROOs on the trade agenda.

ROOs have a number of functions, but in the context of preferences for developing countries, the most important is to prevent trade deflaction, in other words, to attempt to limit the benefits of preferences offered by the “donor” country to designated “recepient” country. Another function is to foster industrial development within recipient countries