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Bjzrzc 4-20mA Electronic Circuit Test Board

Bjzrzc 4-20mA Electronic Circuit Test Board

​Tecoo provides full and partial turnkey PCB assembly services with 4 Yamaha YS12F High Precision Mounter （YAMAHA）SMT lines, X-ray, AOI, spanning over 2000 square meters. We specialize in rigid PCB assembly and flexible PCB assembly. Our quality-oriented custom circuit board assembly process ensures that your finished project is of the highest quality. We handle everything including manufacturing circuit boards, ordering components, online order tracking, quality inspection and final assembly.

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Product Introduction

We will persevere, provide more, updated, faster and more accurate products for printed circuit assembly manufacturing, custom pcba, inverter circuit board industry, and sincerely give back to the society. Our goal is to make our company's main economic and technical indicators always in the forefront of the same industry. We actively carry out green actions and devote ourselves to the harmonious coexistence of people, enterprises and the environment.

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Custom Circuit Board Assembly Services


PCB Assembly Types: Surface Mount Technology (SMT), Ball Grid Array (BGA), uBGA/Micro BGA, Chip Scale Package (CSP)

Soldering techniques: selective wave soldering, high melting point (HMP) soldering, Pb88 soldering and Au80 soldering

Solder Type: Lead Solder, Tin Solder, Lead Free Solder/RoHS Compliant

Testing and Inspection: Flying Probe Testing (FPT), Automated Optical Inspection, X-ray Inspection

Provide you with various PCB prototype assembly services, including wiring harness assembly, injection molding, conformal paint.


Custom Circuit Board Assembly test program


Before final shipment, the assembled board will be subjected to various test methods:

Visual inspection: general quality inspection.

FAI: Full quality inspection of the first PCB to pass all stages of production.

X-ray inspection: Inspect BGAs, QFNs and bare circuit boards.

AOI Test: Check solder paste, 0201 components, missing components and polarity.

3D AOI testing: Check for missing and misplaced SMT components in three dimensions.

3D SPI Testing: Measure the precise volume of solder paste for SMT assembly.

ICT (Online Test).

Functional testing (as per your testing procedure).

ISO certification

Tecoo's production facilities are ISO9001 certified to ensure we exceed your expectations.


If you need a quote for PCB design, fabrication or assembly, please call +86-577-89776016, or email sales@tecoo.com. We need basic information such as board Gerber and BOM.


We have formed a unique technological innovation system, which has strongly promoted the improvement of our economic benefits, technological level and quality of Bjzrzc 4-20mA Electronic Circuit Test Board. We provide a platform and build a stage for the creators. The company continues to innovate with full enthusiasm, carry forward our brand, realize product diversification, and dedicate better and better products to customers.

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