Electronic-ceramics manufacturer Sinopack (中瓷电子) disclosed that all upstream raw-material supplies are domestically sourced and meet its requirements.

The sourcing statement comes from a company response on an interactive platform. The supplied report identifies Sinopack by stock code 003031 and says all its upstream raw-material supplies have been localized and meet its requirements. This is a relayed company disclosure, not an independently supplied procurement audit or exchange filing.

The company described its technical strengths across materials, design, and manufacturing. These include new electronic-ceramic materials, semiconductor-package simulation design, and production processes. It said it holds intellectual property covering multiple ceramic systems, including alumina and aluminum-nitride ceramic series and their matching metallization systems.

Domestic sourcing does not mean that every input is produced internally. Sinopack specifically said its ceramic powders are purchased from domestic suppliers. It emphasized supply stability and controllable material quality as priorities for maintaining product-performance stability and consistency, without providing supplier names, purchasing volumes, or inventory levels.