The local Hualian E-ring in Weihai is of the worst quality and basically unusable.
The best Korean enterprise in Weihai is Pingyuan Ceramics, located in Yangting Town
Qujiahe Industrial Park.
There are two porcelain rings in Suzhou. Kyoto Ceramics has the best quality and the most complete varieties. The phone number is 0631-5781501 and the fax number is 5781502. It is near Zhangcun Technical School.
The other company is Liying Porcelain Ring, which seems to have split up now. You can call He Xiaonan (18660367106) to get in touch. The quality of Liying is far inferior to that of Kyoto, and the variety is also smaller.