List of Contract Services products

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We provide manufacturing technology for neutralization, esterification, sulfonation, phosphorylation, polycondensation reactions, powder mixing, emulsification, and dispersion, etc. *We can also handl...

  • Contract manufacturing

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Do you have any concerns about contract manufacturing of various chemical products?

We would like to introduce the contract manufacturing services provided by Riten Chemical Co., Ltd. We are a chemical manufacturer based in Kyoto with 70 years of experience. Since our establishment, we have been developing, manufacturing, and selling various surfactants used in the textile and paper industries. Based on the technology and development capabilities we have cultivated over the years, we accept contract manufacturing of various chemical products, so please feel free to contact us. 【Contract Manufacturing Achievements】 ■ Construction waterproofing agents ■ Plant growth promoters ■ Construction waterproofing materials ■ Greening-related agents ■ Chemicals for the electronics industry ■ Wastewater treatment agents ■ Industrial preservatives ■ Special surfactants... We provide more detailed information through related products and catalogs.

Heat resistant up to 1200℃. We will custom-make high-performance insulation covers that ensure safety in the working environment!

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  • Glass

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Before considering or purchasing inkjet evaluation machines and mass production equipment, for those who wish to conduct a test once, and for customers who have been evaluated by other companies but w...

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  • Processing Contract
  • Other contract services

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A large stock of phosphor bronze round bars ideal for connectors and electrical contacts!

  • Non-ferrous metals
  • Processing Contract

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From image to design and drafting → manufacturing → packaging and shipping → installation if necessary! We realize your vision with stainless steel processing technology cultivated in Tsubame City!

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  • Processing Contract
  • Stainless steel utensils and containers
  • Stainless steel container

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High strength, high elasticity, and wear resistance make it ideal for jigs, contacts, and inspection parts in semiconductor manufacturing equipment!

  • Non-ferrous metals
  • Processing Contract

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Total coordination from material procurement to processing of steel pipes! We also have various equipment for steel pipe processing.

  • Processing Contract

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Prototype development and mold design aimed at mass production. Prototype in as little as 3 days. Mass production molds in as little as 2 weeks.

  • Processing Contract

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This time, we will focus on stamping processes and explain a simple method for selecting materials suitable for stamping for designers.

  • Contract manufacturing

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It was published in the specialized magazine "Press Technology June issue."

The Intermold 2021 exhibition was held at Tokyo Big Sight Aomi in April. Our company's specialty, precision press-processed parts, was featured. The photo shows a part that has undergone two-stage drawing processing followed by punching. The material is brass, with a thickness of 0.64mm and a height of 4.5mm. The inner diameter is 0.7mm.

"When used for the purpose of electromagnetic wave shielding effect" and so on! An explanation of press processing and related technologies.

  • Processing Contract

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Notice of Update for Technical Document "Product Development Utilizing the Properties of Stainless Steel"

Steel materials are widely used as metal materials, and due to their excellent properties, stainless steel is often used in electrical, electronic, and automotive components. This document introduces the production of Kyo-Wa Hearts products, specifically the use of stainless steel sheets in press processing, highlighting their characteristics and applications based on functionality. Our company produces a large number of precision flat springs, and among them, stainless steel, along with copper and copper alloys, receives a significant number of specifications from our customers. Please take a moment to read the related catalogs below.

As one of the challenges in new processing technologies, we are working on progressive deep drawing.

  • Processing Contract

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It was published in the specialized magazine "Press Technology June issue."

The Intermold 2021 exhibition was held at Tokyo Big Sight Aomi in April. Our company's specialty, precision press-processed parts, was featured. The photo shows a part that has undergone two-stage drawing processing followed by punching. The material is brass, with a thickness of 0.64mm and a height of 4.5mm. The inner diameter is 0.7mm.

Kyowa Hearts works with various types of metals. Some metals can easily rust depending on how they are handled.

  • Processing Contract

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[Notice] Information on Exhibiting at the 25th Mechanical Components Technology Exhibition

This is an announcement for our participation in the 25th Mechanical Components Technology Exhibition! The first real exhibition of this year will be held at Makuhari Messe. Shall we solve your metal processing concerns together? Please come to the Kyo-Wa Hearts booth for technical consultations and information gathering! We will give away technical materials as novelties! (Note: The technical materials will be available until they run out. Thank you for your understanding.) Details of the exhibition are as follows: ■ Event: 25th Mechanical Components Technology Exhibition ■ Date: February 3 (Wed) to February 5 (Fri), 10:00 AM to 6:00 PM (ends at 5:00 PM on the last day) ■ Location: Makuhari Messe ■ Admission Fee: Please apply for an invitation ticket from the URL above. It will be free. (Please note that if you do not have an invitation ticket, the admission fee will be 5,000 yen.) ■ Booth Number: Hall 5, 15-5 [17] ■ Products to be exhibited: We plan to showcase fine press parts, progressive drawing parts, prototypes, magnesium alloy processed products, our own products Nuke and Maggreen. We sincerely look forward to your visit.

We will focus on and explain corrosion phenomena such as galvanic corrosion and crevice corrosion!

  • Technical and Reference Books
  • Contract manufacturing
  • Processing Contract

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Introducing measures to improve mold durability and the effectiveness of selecting stainless steel materials.

  • Processing Contract

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We also provide information on the number of lots that can be handled, the sizes that can be processed, and the materials used!

  • Processing Contract

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Are you a mold maker who goes that far? If you're having trouble finding a place to request mold production, please consult with us.

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  • Other molds
  • Processing Contract

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After about a year of trial and error and repeated testing, we achieved results that are more than three times our initial target in terms of endurance time.

  • Contract manufacturing

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Fine chipping can lead to product defects, so high process management was also required.

  • Contract manufacturing

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Developed a round blade for slitting special films! Very high quality was required for the cutting surface.

  • Contract manufacturing

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We have developed a cutting tool for trimming burrs generated in the manufacturing of automotive seat foam.

  • Contract manufacturing

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We formed a joint development project team, repeatedly conducted tests with prototype blades, and held development meetings.

  • Contract manufacturing

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A comprehensive manufacturer of synthetic resin molded products! Leave two-color molding and insert molding to us.

  • Mold Design
  • Injection Molding Machine
  • Processing Contract

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From industrial machinery to automotive and aircraft parts! We undertake design and drafting work comprehensively.

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  • Mechanical Design
  • Machinery and equipment installation/dismantling/relocation

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Ultra-precision and fine processing! Introduction of ultra-hard measuring tool fine SR processing case studies.

  • Processing Contract

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From design contracting to the dispatch of engineers! We respond flexibly to corporate needs.

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  • Mechanical Design
  • Contract Analysis
  • Contract Analysis

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Contract Manufacturing of Medical Devices: We, with extensive experience in the medical device manufacturing field, support the manufacturing process as your partner factory.

  • Contract manufacturing

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