Would like to highly recommend this exceptional 560 page scholarly thesis, "A Study of Shiwan Pottery" by Fredrikke Scollard, Department of Fine Arts, University of Hong Kong, June 1981.
To describe this thesis as amazing is an understatement. 

In the first portion all existing materials regarding Shiwan, including history, archaeology, literary reference and legend, are put into a chronological framework.

The second portion of the study discusses the pottery products.

A special section is devoted to the specialties of the flower pot guilds whose long ceramic rooftop friezes depicted Foshan's theatrical arts, freezing a colorful moment in history.

Modernization in Shiwan is treated in chapter IV portion of the study which includes an examination of Shiwans re-organization and modernization in the context of overall developments in China and the major resulting changes in its art. A number of contemporary potter family trees demonstrate a strong family tradition.

Chapter V diagrams the development of Shiwan kiln technology and treats some technical and descriptive aspects of Shiwan biscuit glazes and production techniques.
 
The link for the pdf is from the HKU Scholars Hub.  It is first necessary to request the pdf by using the "file download (full text.pdf)" link. The pdf will immediately be emailed to you. It is only viewable for 24 hours before it is necessary to re-request if necessary.

Once the pdf is emailed to you, it is best to save it to your computer so it can be read at your convenience without re-requesting it.

Enjoy !  http://hub.hku.hk/handle/10722/35166