Independent technical inspection & consulting services, led by Yang Jia — a Registered Supervision Engineer (注册监理工程师) with 19 years of MEP and construction experience. We verify quality at the source, so your project meets spec before it ships.
All services are delivered under one non-negotiable principle: strict independence. We are engaged by the client, paid by the client, and accountable only to the client.
We visit your factory or supplier’s site, measure and verify against your technical specifications, and deliver a bilingual evidence report within 24 hours.
Electrical cables & conduit · Plumbing & pipework · HVAC — gauge, insulation, pressure test witness, export certification labels (CE / UL / AS)
Stone & tile slab sorting · Steel weld & paint film check · Aluminium profile thickness · Lab coordination
Board environmental grade · Edge-banding & hardware · 1:1 pre-assembly trial · Dimension vs. drawing cross-check
Inspect during production or at finished-goods stage — catch defects before they reach the container
📌 Inspection scope and acceptance criteria are defined by the client. Whether to accept or reject goods is the client’s sole decision.
Request Inspection →We locate and assess qualified suppliers in China. You retain full control of negotiation, pricing, and purchasing. We charge a fixed service fee — nothing more.
Shortlist factories that match your product category, production capacity, and quality level
Convert your English drawings and specifications into a factory-ready Chinese technical brief
On-site review of equipment, QC process, and workforce before you commit to an order
Shipment via our Guangzhou company or direct by the factory — your choice. VAT invoice issued.
📌 Price negotiation and purchasing decisions remain entirely with the client. We do not take trade margins or supplier commissions.
Enquire →Written technical opinions from a credentialled engineer — for dispute resolution, pre-purchase risk assessment, or defect documentation.
Independent technical opinion on whether goods meet contracted spec — evidence for negotiation, rejection, or legal proceedings
Written assessment of a proposed purchase: supplier risk, specification gaps, and recommended inspection points
On-site survey of delivered or installed materials — document defects with measured evidence during defect liability period
Review supplier’s quality certificates, test reports, and material datasheets against your project requirements
📌 All opinions are the professional view of Yang Jia as an individually licensed engineer, provided via technical consulting engagement.
Discuss Your Case →Select a service to see the exact steps — from first contact to final deliverable.
Client shares technical documents — drawings, purchase order, or specification sheets. We confirm project scope and open an inspection reference.
Agree on applicable technical standards (GB / ISO / CE / client spec) and confirm inspection scope in writing before any fieldwork begins.
We evaluate and propose critical inspection checkpoints. Client reviews and confirms in writing — defining the acceptance criteria before we proceed.
Licensed engineer visits the factory or site. Physical measurements, material verification, and real-time photo & video documentation against confirmed checkpoints.
Preliminary findings and progress updates shared with client during the visit — no surprises at report stage.
Bilingual PDF (EN / 中文) with photographs, measured data, and pass/fail conclusions. Delivered within 24 hours of inspection completion.
If defects are found, we liaise with the supplier on the client’s behalf and re-inspect after corrective action is completed.
Share product requirements, technical specifications, and target delivery schedule. We confirm scope and open a project file.
Agree on product standards, quality benchmarks, and evaluation criteria before sourcing begins.
We identify qualified manufacturers matching your requirements. Standard materials: minimum 3 candidates. Specialised or custom items: number as agreed with client.
Supplier profiles delivered with capability overview, available certifications, and factory location. Client reviews and selects preferred supplier.
Price negotiation, contract terms, and purchasing are the client’s sole decision. We do not participate in commercial terms or take any trade margin.
Evaluate and confirm critical inspection checkpoints against the finalised purchase order and product specification.
Licensed engineer visits factory. Physical measurements, material verification, and real-time photo & video documentation.
Preliminary findings and progress updates shared with client during the visit.
Bilingual PDF with photographs, measured data, and pass/fail conclusions delivered within 24 hours of inspection completion.
Describe your situation and attach relevant documents — contracts, supplier correspondence, inspection photos, test certificates, or drawings.
We assess feasibility and confirm engagement scope, timeline, and a fixed fee within one business day.
Systematic technical review of all supplied materials against applicable standards, contractual requirements, and industry norms.
On-site visit for defect surveys, condition assessments, or direct evidence collection where physical inspection is necessary to form a complete opinion.
Preliminary findings shared with client to verify factual accuracy. Client may correct factual errors; the professional opinion and conclusions are Yang Jia’s independent judgement and are not subject to client editing.
Signed professional report issued under Yang Jia’s name as a Registered Supervision Engineer. Suitable for dispute negotiation, rejection claims, warranty proceedings, or legal use.
Unlike general QC agents, we interpret technical drawings, understand tolerances, and inspect to your actual specification — not a generic checklist.
Yang Jia personally holds a Registered Supervision Engineer licence (注册监理工程师) — a national professional licence issued by China’s MOHURD. Every inspection is led by this credentialled engineer, not delegated to junior staff.
MEP systems are where expensive mistakes hide. 19 years of hands-on MEP site experience means we know exactly where to look — and what counts as a real defect.
Our Guangzhou company issues proper VAT invoices, signs enforceable service contracts, and handles foreign-exchange settlements — protecting your financial records.
Every report includes measured data, calibrated instrument readings, and timestamped photos. Use it to negotiate, reject, or claim warranty in any jurisdiction.
Based in Guangzhou — we cover Foshan, Dongguan, Zhongshan, Shenzhen, and all major GBA manufacturing hubs with same-day or next-day on-site availability.
Registered Supervision Engineer · Chief Resident Engineer
With over 19 years of hands-on experience in MEP engineering and construction quality management across large-scale commercial and residential projects in the Greater Bay Area, Yang Jia brings a depth of technical knowledge that general inspection agencies simply cannot match.
As a former Chief Resident Engineer (总监理工程师), Yang has led multi-disciplinary supervision teams on projects exceeding 100,000 m² — giving him a systemic understanding of where quality failures originate and how to prevent them at the source.
Services are provided through Guangzhou 19 Information Technology Co., Ltd. (广州壹拾玖信息科技有限公司) in the capacity of technical consulting and independent inspection — not as a licensed 监理单位 under Chinese domestic construction law. Yang Jia’s Registered Supervision Engineer licence is a personal professional credential and the basis of his technical expertise.
Tell us what you need. We’ll confirm feasibility, timeline, and a fixed fee within one business day.