Can I apply a Tourist Visa to China from the Philippines even I am a Permanent Residents in Japan?

Dear Sir/Mam; I am a Filipino but a Permanent Resident in Japan. I was invited by a friend to meet and attend a Trade Fair Convention in Guangzhou, China this coming April 2013. Since the Chinese Embassy is quite far from the place where I live in Japan and the charges are quite expensive, I want to apply from the Philippines going to China and because I also want to visit my family first from the Philippines before going to China. Please let me know if I can apply there and the necessary documents I will needing for applying the said Visa. My friend who was inviting me will be the one to shoulder my air fare and hotel accomodations. Thanks and God Bless...