Molecular Sieve Factories & Pricelist Serving the Hanoi Market

Direct overland cross-border trucking through the Youyi Guan (Friendship Pass) border crossing allows freight to arrive in Hanoi within 48 to 72 hours following dispatch. Alternatively, for cost-optimized high-tonnage consignments, maritime container shipping from Guangzhou or Shenzhen ports directly to Hai Phong Port takes approximately 4 to 6 days door-to-door, followed by bonded local carriage to Hanoi's surrounding provinces (Hung Yen, Bac Ninh, Vinh Phuc).

Hanoi experiences high humidity and prolonged damp spells (nồm) during the spring. If ambient air enters unsealed molecular sieve storage, the material will prematurely adsorb ambient moisture and lose dynamic adsorption capacity. To protect your investment, Zhongtai delivers products in hermetically sealed carbon steel drums (with air-tight inner polyethylene bag liners) or vacuum-sealed super sacks with an internal nitrogen blanket. During site vessel loading, continuous dry gas purging or direct funnel-hose dumping is recommended to limit ambient exposure to less than 30 minutes.

While both materials share the Faujasite crystal framework, 13X-HP (High Performance) is specifically engineered with an optimized cation exchange and micro-pore structure to maximize N₂/O₂ separation selectivity and nitrogen adsorption capacity under dynamic swing pressures. Standard 13X is generally employed for static co-adsorption of moisture and CO₂, while 13X-HP allows VPSA and PSA oxygen plants to downsize bed volumes by up to 25% while maintaining oxygen purity rates of 93% ± 3%.

Yes. Thermal swing regeneration (TSA) is standard practice. For moisture removal, beds are heated with a dry purge gas (typically nitrogen or dry air) to temperatures between 200°C and 315°C depending on column design. It is essential not to exceed 450°C, as uncontrolled thermal runaway will collapse the synthetic aluminosilicate crystalline lattice. Our engineering team provides detailed desorption temperature curves and purge rate calculations to ensure optimal recovery of initial bed capacity.

Yes. As an authorized Chinese exporter under the ASEAN-China Free Trade Area, Pingxiang Zhongtai prepares certified Form E Certificates of Origin. This documentation allows Vietnamese import brokers and plant operators to claim reduced or zero-rated import duties under prevailing ACFTA tariff schedules, substantially reducing landed procurement costs compared to sourcing from non-ASEAN trading entities.