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FAQ

I'm not sure which product I need — can you help me choose?

Yes. Send us your application details — the process, flow rates, temperature, pressure and chemistry — and our engineers will recommend the right packing, media or adsorbent, together with the material and size. Helping customers specify the correct product is a core part of what we do.

What materials are your tower packing and media available in?

Our packing and media are made in metal (stainless steel, carbon steel and higher alloys), ceramic, and plastic (PP, PVC, CPVC, PTFE), so the material can be matched to your temperature, pressure and chemical conditions. If you tell us the service, we will recommend the right one.

What products does Rongjian manufacture?

We manufacture three main lines: tower packing (random and structured packing, plus column internals such as liquid distributors, support plates and mist eliminators), water treatment media (MBBR biofilm carriers, bio balls, tube settlers, ceramic sand and iron-carbon filler), and adsorbents (3A, 4A, 5A and 13X molecular sieves, silica gel and activated alumina). They are used in chemical, petrochemical, environmental and water treatment plants worldwide.

Do you provide product samples before bulk orders?

Yes. We can arrange sample shipments for evaluation before bulk orders. Sample costs and shipping fees may apply depending on the product type and destination.

How do I get a quote?

Send us your product type, quantity, destination port and any special requirements via our contact form, email or WhatsApp. We will respond with a detailed quotation within 24 hours.

How do I place an order?

It is straightforward: send us your enquiry with the product, specification and quantity; we reply with a quotation and lead time; once you confirm and your deposit is received, we start production and keep you updated through to shipment. You can reach us through the contact form or by email.

What is your average lead time?

Stock items: 3–5 days. Standard bulk orders: 7–15 days depending on the volume. Custom designs: 15–25 days.

What is your Minimum Order Quantity (MOQ)?

For standard mass products (like ceramic balls/packings), the MOQ is typically 1 Cubic Meter (1 m³) or 1 Ton. Small trial orders are always negotiable.

What shipping methods and Incoterms do you offer?

We ship worldwide by sea (FCL or LCL) and by air or express for smaller or urgent orders, and we work on common Incoterms such as FOB, CIF, CFR and EXW. Tell us your destination port and preferred terms and we will quote accordingly.

How do you package your products for export?

Products are packed for safe international transport — typically in woven bags, cartons or on pallets, with ceramic items given extra protection against breakage and everything shrink-wrapped or crated to suit the shipping method. We can also follow your own packing and labelling requirements.

What are your accepted payment and shipping terms?

Incoterms: FOB, CFR, CIF, EXW.Ports of Loading: Shanghai, Shenzhen, Ningbo, or Qingdao.Payment: We support Alibaba Trade Assurance (highly recommended for buyer protection), T/T, L/C, and Western Union.

What packaging options do you offer for export?

We use heavy-duty export packaging: Plastic woven bags, Jumbo bags (Ton bags), Super sacks on fumigated wooden pallets, or steel drums.

Do you provide certificates and test reports?

Yes. We can provide quality certificates, material and test reports, and specification sheets on request. Let us know what documentation you need for your project or for customs clearance and we will prepare it.

How do you control product quality?

We control quality at every stage — raw-material selection, in-process checks during production, and final inspection before packing — so that dimensions, weight and performance meet specification. Our [quality management system / ISO 9001] governs the process, and we can supply inspection records with your order.

What quality certifications do you hold?

Our products are manufactured under ISO 9001 quality management system. We hold 17 national patents and all products come with full batch test reports covering dimensions, crush strength, chemical composition and other key parameters.

Can you develop a product to my drawing or sample?

In most cases, yes. Send us a drawing, sample or technical spec, and our engineers will review whether we can match or adapt it, then advise on tooling, MOQ and lead time for the custom item.

Do you offer OEM or private-label service?

Yes. We provide OEM and private-label service, including your own branding, packaging and labelling, so you can sell our products under your name. Tell us your requirements and quantities and we will prepare a proposal.

Can you customize products to meet specific technical requirements?

Yes. We accept OEM and custom orders. Please provide your technical drawings, material specifications or performance requirements and our engineering team will respond within 24 hours.