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/total-investment.md

@@ -67,8 +67,11 @@ on two shifts (estimate: the [scale](../scale.md) basis gives ~0.71 to
 
 Not in the total: a **reserve for the ramp-up** (staff hired before first
 revenue, overheads until volume covers them; ~10M to 20M THB, estimate),
-CD replication, financing costs, currency moves, and the archive's mobile
-shelving (to quote). The blocks are vendor prices without Thai duty or
+CD replication, financing costs, currency moves, the archive's mobile
+shelving (to quote), and the central hydraulic plant around the Newbilt
+aggregates: standby pump set, accumulator station and ring main (not
+costed yet; a Thai HPU builder quotes it,
+[Chinese suppliers](../suppliers/china-utilities.md#hydraulics)). The blocks are vendor prices without Thai duty or
 import VAT, so they assume BOI promotion: without it, ~5 % duty on ~2.3M
 USD of imported machinery (~0.11M USD) comes on top, plus ~0.17M USD of
 import VAT paid at the border and reclaimed later (estimates).
@@ -104,6 +107,17 @@ installations while the frame stays crane-ready (~3.7M THB) give ~185M
 before the reserve, still above 180M, so 180M is a low-quote outcome, not
 a plan.
 
+Chinese suppliers for the boilers, compressed air and hydraulics were
+checked in October 2026
+([Chinese suppliers](../suppliers/china-utilities.md)): about 2M THB at
+the midpoint, ~2.5M with its share of the contingency, mostly on the two
+boiler modules (ASME-stamped 1.25 MPa units from makers with Thai
+references, installed by a Thai contractor) and a little on the
+compressor (a Chinese brand bought through its Thai office). That is
+about 1 % of the target and does not change the answer; the Newbilt
+hydraulic aggregates stay Newbilt's. Chinese chillers and HVAC, larger
+blocks, are not checked yet.
+
 What decides it: the two largest machine lines have no price at all (the
 Classic and the Pheenix galvanics line), and the building depends on the
 soil. Four requests settle most of the band: the Newbilt re-quote for the