Deman in Cixi publishes named screw families: DDVe two-stage, ZV single-stage and ZZV PM VSD. Low-pressure LDV is a different bar band. This is a factory-air OEM, not a CNG process-gas shop.
Ningbo Deman Compressor rows published here: DDVe / GGVe two-stage screw; ZZV PM VSD screw; LDV low-pressure screw. Those names come from official product pages. Nameplate kW, bar(g) and FAD are confirmed on the RFQ — they are not typed in from a brochure photo.
If the RFQ only says “screw compressor, China”, Ningbo Deman Compressor in Cixi cannot price it. Start with the published architecture — DDVe / GGVe two-stage screw; ZZV PM VSD screw; LDV low-pressure screw — then bar(g) and FAD.
General factory air for Ningbo Deman Compressor: kW or FAD, bar(g), 50/60 Hz and voltage, plus whether the package is oil-injected or oil-free. Named works: Cixi. Duty-sheet prompts used on this desk: Working pressure in bar(g); Required FAD at that pressure; Motor kW or site limit.
Cixi is filed in the Ningbo cluster. Cluster is geography, not interchangeability with another brand on this desk.
CompressorB2B lists Ningbo Deman Compressor so a project team can put architecture on a comparable sheet before they fly to Cixi. The plant remains the seller.