1. ES-B Shaftless Electrical Mill Roll Stand     Symmetric structure for non-stop paper change; electric control for paper lifting/clamping/centering; pneumatic tension + braking; expansion-type paper clamp.2. SF-320 Adsorption Type Single Facer Machine     Negative pressure design (uniform corrugation/gluing); corrugated roller (48CrMo, HRC58, medium-frequency quenching + hard chrome plating); airbag pressure control; electric glue adjustment; easy-clean glue system.3. GM-E Gluer Machine     Cast iron frame (stability); independent frequency conversion motors per layer; PLC-controlled coating gap; stainless steel glue tank (auto circulation); dynamic-balanced glue rollers (glue saving).4. SM-F Heavy Double Facer Machine     S-shaped steam flow (high heat efficiency); pneumatic pressure plate + roller pressing...