Chinese suppliers for boilers, compressed air and hydraulics

Checked October 2026 on the investor's budget question. New
docs/suppliers/china-utilities.md: boiler makers (ZOZEN, Sitong,
Fangkuai, Taiguo, Yuanda, Yongxing, Taishan, Nobeth) with fit for 500
kg/h at 1.25 MPa, claimed certificates, Thai references and listing
prices; the Thai rules for an imported boiler (MR and MOI notification
B.E. 2549: ASME/JIS/EN or equivalent, certification-body verification,
once-through relief does not reach 10.5 bar, licensed controller, annual
inspection); compressor makers with Thai offices (Kaishan, Denair) and
sizing; hydraulic pump sets and accumulators (Huade, Yuci, Hengli, WMD,
Renowell, Inovance, NXQ makers), the shared-ring-main risks and Thai HPU
builders; duty and freight; open RFQs.

Result: about 2M THB at the midpoint (~2.5M with contingency), ~1 % of
the 216M target, mostly the boilers; Newbilt aggregates stay Newbilt's.
total-investment notes it and lists the uncosted central hydraulic
plant; utilities CSV gets the Chinese candidates and route estimates;
backlinks from equipment-suppliers, pressing-line, README.

docs/finance/utilities-investment.csv

@@ -1,8 +1,8 @@
 category,item,spec_summary,candidate_thai_suppliers,cost_low_thb,cost_high_thb,cost_basis,notes
-steam,Electric/gas once-through boiler bank,"2 x 500 kg/h modules at 10.5 bar / 180 C, lead/lag, shared feed tank, feed pumps, economizer, installed",Miura Thailand (Chachoengsao); Bangkok Industrial Boilers; STE Thailand,4500000,7000000,engineering estimate,"Launch plant (October 2026): one Duplex system and one Classic, 450-540 kg/h at Newbilt's 150-180 kg/h per press, so B-1 and B-2 both at launch; the boiler hall is built for four modules (scale.md utility phasing); a third module for N+1 is an RFQ option; Miura-class modular once-through; service is Bangkok-centric, confirm northern dispatch SLA"
+steam,Electric/gas once-through boiler bank,"2 x 500 kg/h modules at 10.5 bar / 180 C, lead/lag, shared feed tank, feed pumps, economizer, installed","Miura Thailand (Chachoengsao); Bangkok Industrial Boilers; STE Thailand; Chinese route (October 2026): ZOZEN, Sitong, Fangkuai, Taiguo (ASME claimed, Thai references, no Thai service partner), see suppliers/china-utilities.md",4500000,7000000,engineering estimate,"Launch plant (October 2026): one Duplex system and one Classic, 450-540 kg/h at Newbilt's 150-180 kg/h per press, so B-1 and B-2 both at launch; the boiler hall is built for four modules (scale.md utility phasing); a third module for N+1 is an RFQ option; Miura-class modular once-through; service is Bangkok-centric, confirm northern dispatch SLA; Chinese route estimate 2.8M-5.5M THB installed (two ASME-stamped 1.25 MPa bodies USD 15k-35k each, inspection and certification, freight, Thai contractor balance of plant), about 1.6M THB less at the midpoint; imported boilers need DIW certification-body verification either way"
 steam,Biomass/wood-fired boiler package (option),"~1 t/h solid fuel (wood chips/pellets/rice husk) incl. fuel feed, grate, dust control, softener, installed",Getabec PCL (Thai fabrication and service),6000000,10000000,engineering estimate,"Sized for the five-press fleet (was ~0.5 t/h for one Duplex); sustainability path matching Deepgrooves NL precedent; higher capex, lower fuel opex in the North; NOT included in baseline total"
 steam,Steam balance of plant,"Traps, accumulator, condensate return",Forbes Marshall Thailand,0,0,included,Largely included in boiler package rows; line kept for RFQ completeness
-compressed_air,Screw compressor skid (oil-injected),"~7.5 kW VSD screw + refrigerated dryer (3 C PDP) + coalescing filters + ~500 L receiver, installed",Atlas Copco Thailand; Kaeser Thailand (SM-T/Aircenter); Ingersoll Rand Thailand,350000,600000,engineering estimate,14-30 m3/h demand is small (5-10 hp class); oil-injected + filter train meets 5 micron / 3 C spec
+compressed_air,Screw compressor skid (oil-injected),"~7.5 kW VSD screw + refrigerated dryer (3 C PDP) + coalescing filters + ~500 L receiver, installed","Atlas Copco Thailand; Kaeser Thailand (SM-T/Aircenter); Ingersoll Rand Thailand; Chinese brands with Thai offices (October 2026): Kaishan Compressor (Thailand), Denair Thailand, see suppliers/china-utilities.md",350000,600000,engineering estimate,"14-30 m3/h demand is small (5-10 hp class); oil-injected + filter train meets 5 micron / 3 C spec; Chinese route estimate 0.15M-0.3M THB installed (PM VSD 11 kW class USD 2k-5k, dryer, receiver, filters, installation)"
 compressed_air,True oil-free class-0 (option),Same duty in oil-free class-0,Atlas Copco (ZR/ZT); Kaeser,1200000,1800000,engineering estimate,Only if air contacts product stream; NOT included in baseline total
 cooling,Process chiller bank 2 x 250 kW,"2 x ~71 RT air-cooled screw/scroll chillers rated at 40 C ambient (CH-1, CH-2) + primary pumps + plate HX + warm and cold tanks + VFD supply pumps + controls, backbone (HX frame, tanks, pumps, mains) sized for four modules, installed",Trane Thailand; Carrier Thailand; Daikin Applied Thailand; Hitachi Thailand,4900000,7900000,engineering estimate,"Launch plant (October 2026): Duplex system ~261 kW hot-afternoon peak (scale.md) plus the Classic up to ~125 kW (Newbilt per press), ~390 kW against 500 kW installed; was 3 x 250 kW at 6.5-10.5M for five presses, less one module at ~1.6-2.6M THB (estimate); CH-3 and CH-4 come with the growth options; 3 x 350 kW frame pads stay the alternative (steam-cooling.html)"
 cooling,Cooling tower + HX loop (alternative),Dry cooler or FRP tower ~650-750 kW reject + plate HX + pumps + tanks + water treatment,"Liang Chi Thailand (tower, large service org); Process Cooling Solutions; Tasaki (integrators)",2000000,3500000,engineering estimate,Cheaper capex but wet-bulb-limited; hybrid tower + trim chiller is the efficiency-optimal design; NOT included in baseline total