I do not remember if the bio-date page of chinese passport need to notarized but the other two is a must. Here's a website that list where to get these notarized (including translation):
http://www.lawtime.cn/gongzhengchu/For example, if you are in Shanghai, you can go to the notary office at 249 Hengshan Lu Tel: 021-64310286
If the immigration application checklist doesn't say, you don't have to provide it. Visa office will let you know if they require.