In 2015, while developing high performance hollow fiber membranes, Customer Motian Technology faced an industry wide challenge: TIPS spinnerets were generally limited to single hole designs, failing to meet high efficiency production needs.

In 2017, as a leading enterprise in environmental water treatment, Customer Bijie faced surging market demand for hollow fiber membranes.

In 2019, as a leading player in China's membrane technology sector, Jiuwu faced dual challenges while expanding high-performance ultrafiltration capacity: a throughput bottleneck with multi hole spinnerets and difficult maintenance with conventional structures.

In 2017, LSJ Filter Technology, a domestic specialist in membrane R&D, launched a project to develop high-performance multi-channel composite membranes to overcome the flux bottleneck and mass-transfer limitations of conventional single channel hollow fibers.

Before 2017, Shuiyi Group was troubled by two major issues with conventional hollow fiber membrane spinnerets

Before the 2017 purchase, Lengthen faced a critical bottleneck in scaling hemodialysis membrane capacity: incumbent spinneret production lead times were 6–12 months, severely affecting throughput.

In 2016, during an upgrade of its water treatment membrane production line, E&E Technology Group identified an industry wide issue with its existing spinnerets: concentricity deviations in hollow fiber formation, leading to uneven wall thickness and unstable flux.

In 2016, the client (Ohappure) posed a cutting-edge technical challenge to Trustech: to develop a high-performance ultrafiltration (UF) hollow fiber separation membrane.

To address these issues, Century Water proposed developing "dual-layer composite hollow fiber membranes," centered on a matching single-hole spinneret capable of: (i) precise synchronized extrusion of two different dopes to ensure tight interfacial bonding; (ii) combining high selectivity (inner-layer pore size 0.01–0.02 μm) with high flux (≥ 55 LMH); and (iii) enhanced anti-fouling.

When MEM-TEK purchased this spinneret, they were focused on R&D and pilot scale trials of "braid tube reinforced hollow fiber membranes," primarily aimed at treating high salinity industrial wastewater and advanced purification of municipal drinking water.