The development of high-performance materials like Poly(p-phenylene-2,6-benzobisoxazole) (PBO) fibers is a cornerstone of technological advancement in various industries. The exceptional strength, thermal stability, and flame resistance of PBO fibers are directly linked to the quality of their constituent raw materials. In this context, NINGBO INNO PHARMCHEM CO.,LTD. plays a vital role as a PBO fiber raw material supplier, offering 4,6-Diaminoresorcinol dihydrochloride (CAS 16523-31-2) with a superior purity of 99.0% minimum.
As a dedicated manufacturer in China, we recognize that the performance of the final PBO fiber product hinges on the precise specifications of its chemical precursors. 4,6-Diaminoresorcinol dihydrochloride serves as a critical monomer in the polymerization process that creates the rigid, rod-like structure of PBO. This molecular architecture is responsible for the fiber's remarkable mechanical properties. By ensuring the highest purity and consistency of our product, NINGBO INNO PHARMCHEM CO.,LTD. empowers manufacturers to produce PBO fibers that meet the demanding requirements of aerospace, defense, and other high-tech sectors. Our reliability as a supplier is paramount for these critical applications.
Companies seeking to buy 4,6-Diaminoresorcinol dihydrochloride CAS 16523-31-2 need a partner they can trust for consistent quality and supply. NINGBO INNO PHARMCHEM CO.,LTD. leverages its expertise as a high purity chemical manufacturer in China to provide just that. Our commitment to quality control and efficient production processes ensures that our clients receive a product that is not only chemically pure but also cost-effective and readily available. This focus on quality and supply chain integrity makes us an indispensable link in the creation of cutting-edge materials that push the boundaries of innovation.
Manufacturing Facilities






Professional Export Experience
to Global Customers
1. 20 years of R&D, manufacturing and sales experience, serving customers in 60 countries and regions around the world;
2. Own R&D laboratory, pilot platform and large-scale production workshop, which can meet the audit requirements of global customers;
3. We can satisfy customers' perfect transition from small scale lab requirements (gram level) to commercialization requirements (hundred tons level).
A: We don't have Minimum Order Quantity, exact quantity should be provided before quotation for us to calculate the exact cost.
A: We don't provide free samples due to lots of request and expensive international courier's cost, we can deduct the sample charge after commercial order placed.
A: Our payment terms: Small or sample order: T/T IN ADVANCE. Commercial order: First order should be by T/T IN ADVANCE or L/C at sight, and following orders T/T 30~90days is acceptable subject to approval of credit application.