The photoresist concept fluctuated and rebounded. Polaroid's “20cm” rise and fall, while Tongyu New Materials, Xingfu Electronics, Kangda New Materials, Olaide, Jacques Technology, and Guangxin Materials followed suit.

The photoresist concept fluctuated and rebounded. Polaroid's “20cm” rise and fall, while Tongyu New Materials, Xingfu Electronics, Kangda New Materials, Olaide, Jacques Technology, and Guangxin Materials followed suit.