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In-Stock Gene Library

Tens of Thousands of Gene Resources, Searchable to Meet Your Needs

Plasmid Vector Library

A Diverse Collection of Plasmid Resources for High-Throughput Research

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siRNA Synthesis
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miRNA Synthesis
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Plasmid Construction
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Gene Synthesis
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About Us

Focused on the field of molecular synthetic biology.
Founded in December 2025, Shanghai Zhiyin Biotechnology Co., Ltd. is located in the core area of Shanghai Zhangjiang High-Tech Park, focusing on the field of molecular synthetic biology. The company's core technologies include gene synthesis, oligonucleotide synthesis, and plasmid vector construction.
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QuasiBio builds the molecular foundation for innovation in life sciences and medicine with verifiable synthetic quality.
09-09 2026

QuasiBio builds the molecular foundation for innovation in life sciences and medicine with verifiable synthetic quality.

Building the Molecular Foundation for Life Sciences and Pharmaceutical Innovation Through Verifiable Synthesis QualityGene Synthesis · Oligonucleotide Synthesis · Plasmid Vector Construction · In-Hou
siRNA Synthesis · Limited-Time 3+1 Guarantee Package
09-09 2026

siRNA Synthesis · Limited-Time 3+1 Guarantee Package

Precision Synthesis · Fast Delivery | Target Evaluation · Intelligent Design · Flexible Synthesis · Precise Validation

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