China Materials: E-Fabric Supply Constraints: Regulatory Hurdles, Rising Capex and Unproven Domestic Looms

Citi Research, following its AI PCB upstream materials tour in Suzhou, discussed potential changes in electronic yarn and e-fabric supply constraints with Mr Liu Changlei, Secretary-General of the China Fiberglass Industry Association. Three developments are worth monitoring. First, domestic loom development is progressing with initial trials in fabric preprocessing, but stable commercial production of conventional 7628 and 2116 finished e-fabric has yet to be demonstrated, while thinner and specialty grades face greater technical challenges; domestic looms should not be treated as a meaningful source of qualified incremental weaving capacity until production stability, yields and customer acceptance are validated. Second, revised industrial policy classifications may allow electronic yarn furnaces of approximately 5-20kt rather than requiring conventional large-scale investments, potentially giving independent e-fabric makers a captive yarn route, though project approvals, economics a