Production and quality control

Flow from order to shipment

Estimation Request

If we are offered estimation request by fax or e-mail, as soon as we consider it, and return an estimate that described terms and conditions by fax or e-mail.

Production Arrangement

If we are ordered by our estimation, we confirm a purchase and arrange to product. Then we assign a 9-digit lot number.

Manufacture in-house

We manufacture using adequate machine from a lot of machines. At each manufacturing steps, we use Inspection management system "Souryu" that developed in-house to input inspection data. "Souryu" support accurate measurement using a variety of feature. We can output product inspection report and quality control chart soon from Measurement data saved in PC.

Delivery Date Management

We manage delivery date using system "Seisanjokyo" that visualize each manufacturing steps. Using this system, our sales staff are able to see easily all product data, and response rapidly.

Pre-shipment Inspection

We inspect a portion of products using inspection machine or visual inspection before shipment.


Packed case is boarded on palette by robot arm and to be ready to shipping.


ISO 9001:2015

We meet the expectations and needs of customers and improve customer satisfaction, by establishing quality management system comply with ISO 9001:2015 requirement and making good use of it.
Target Products
Plumbing U-Bolt、Surveying nail、Cold headed bolts、Wood screw、Machine screw、Tapping screw、Pin、Rivet
Quality Policy
"Customer first and aspire Quality problem be zero"
Certification Date
May 29, 1998 Obtained ISO 9002:1994 Certification.
July 11, 2003 Obtained ISO 9001:2000 Certification.
June 11, 2010 Obtained ISO 9001:2008 Certification.
May 26, 2017 Obtained ISO 9001:2015 Certification.