SIKEN is the export arm of Baolongda Group, a national “Little Giant” manufacturer based in Linqu Chemical Industry Park, Shandong. We make structural silicone, MS polymer and weatherproof sealants for curtain walls and facades — and we supply contractors, distributors and facade engineers worldwide under their own brand.

  • Founded 2004
  • 50,000 t annual capacity of high-performance silicone materials
  • 32 patents (25 invention, 7 utility)
  • 8 national and industry standards — we led 6

Verify before you order

We run a full in-house laboratory. Before any batch goes into production it is tested for surface drying time, consistency, volatile content, extrudability, tensile strength, flash point, viscosity and full cure time. Every result becomes a written parameter standard, and that standard is what our production lines follow.

After your goods ship, we retain a sealed sample of the same batch in our retention room — so your sample and ours can be compared.

What we own

  • 6 mixing lines for one- and two-component sealants
  • 18 automatic and semi-automatic filling lines
  • 200 tonnes of finished sealant per day
  • Our own fleet of 28 seventeen-metre trailers

Two production bases, 36,000 m² in total — one integrated manufacturing base in Linqu Chemical Industry Park, Shandong, and one base for R&D and in-house production of our own silicone raw materials

Compounding, filling and packing all happen in house. That is the part a distributor can verify without flying out.

OEM and private label

Your brand on the label, your formulation in the drum.

  • Cartridges: 300 ml × 12 per carton
  • Sausages: 590 ml × 20 per carton
  • Bulk packaging on request
  • Colour, packaging and formulation customisation

We sign an NDA before you share a formulation.

Documents on request

Independently lab-tested:

  • REACH SVHC — SGS TAOEC24003858803
  • RoHS — SGS TAOEC24003858801
  • TSCA — GIG GNBC240402166EN

Working with us

  • MOQ: typically 500 cartons for standard products. For specialised products or custom formulations we discuss flexible options.
  • Lead time: about 15–20 days for standard products after order confirmation and deposit; 25–30 days for custom formulations or special packaging.
  • Volume pricing: tiered — the discount rate increases with order quantity.
  • Samples: free samples for quality evaluation; shipping costs negotiable based on your location and order potential.

Request a quote

Tell us the products and the volumes you work with. Fill in the form below with your name, email, phone, country and requirements — we reply within one working day.

Prefer WhatsApp? Message us on +86 137 8087 6997