强力新材：公司的光敏性聚酰亚胺（PSPI）仍处于客户验证阶段，截至目前尚未通过认证

Group 1 - The company is currently in the customer verification stage for its photosensitive polyimide (PSPI) product, and it has not yet passed certification [2] - There are inquiries from investors regarding whether the PSPI product has undergone small-scale testing at certain manufacturers [2] - The company has not confirmed any orders related to the PSPI construction project as it is still in the verification phase [2]