FAQ
China Sourcing FAQ
Expert answers to common questions about sourcing industrial products, valves, pumps, and instrumentation from China.
How do I find reliable valve manufacturers in China?
The best approach is to start with China's major valve manufacturing hubs: Wenzhou (Zhejiang), Tianjin, and Shanghai. Work with a sourcing agent who can conduct factory audits, verify certifications (API 6D, ISO 9001), and check references. Always request material test certificates and conduct third-party inspections before shipping.
What is the minimum order quantity (MOQ) for Chinese valve manufacturers?
MOQs vary by manufacturer and product type. Standard industrial valves typically have MOQs of 50-200 units for small sizes, while large-diameter or specialized valves may require 10-50 units. Some factories accept lower MOQs at higher unit prices. A local sourcing agent can negotiate better terms.
How do I ensure quality control when sourcing from China?
Implement a 3-stage quality control process: (1) Pre-production inspection of raw materials, (2) During-production inspection (DPI) to catch issues early, and (3) Pre-shipment inspection (PSI) per AQL standards. Use third-party inspection companies like SGS, Bureau Veritas, or work with a sourcing agency that provides in-house QC services.
What certifications should Chinese pump and valve suppliers have?
Key certifications include: API 6D (pipeline valves), ISO 17292 (metal ball valves), ISO 9001 (quality management), CE/PED (European market), ASME B16.34 (dimensional standards), and ATEX (explosive environments). For pumps, ISO 5199 and ISO 9905 are relevant. Always verify certificates are current and applicable to your specific product.
How long does it take to manufacture and ship industrial valves from China?
Typical lead times are 30-60 days for standard valves and 60-90 days for custom or large-diameter valves. Sea freight from major Chinese ports (Shanghai, Ningbo, Shenzhen) to US West Coast takes 12-18 days, to Europe 25-35 days. Factor in 7-14 days for inspection and documentation. Build 2-4 weeks of buffer time into your procurement schedule.
What payment terms are common when sourcing from Chinese suppliers?
Common payment terms are 30% deposit with 70% against copy of shipping documents (T/T), or L/C at sight for larger orders. For new supplier relationships, consider milestone payments tied to inspection milestones. Avoid 100% upfront payment. A sourcing agent can help structure payment terms that protect your interests.
Is it cheaper to source pumps and valves directly from China or through a sourcing agent?
While direct sourcing eliminates middleman fees, the hidden costs often outweigh the savings: language barriers, quality risks, logistics headaches, and time spent vetting suppliers. A professional sourcing agent typically reduces total landed costs by 15-35% through better supplier selection, price negotiation, and quality assurance.
How do I handle logistics and customs clearance for industrial equipment?
Most Chinese suppliers can arrange FOB (Free on Board) shipping from the nearest port. For door-to-door service, work with a freight forwarder who handles sea/air freight, customs clearance, and local delivery. Ensure all shipping documents (commercial invoice, packing list, bill of lading, certificate of origin) are complete and accurate.