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Plastic mold making · Injection molding

Custom plastic injection molding, with molds built in-house

Chang-Hao (昌昊興業) is a plastic mold maker and injection molder in Xinzhuang, New Taipei City, Taiwan. Founded in 1987, it merged its mold shop and molding plant in 2000, so quoting, mold design, trials and production all happen within one company.

The plant runs 10 injection molding machines with press tonnages from 80 to 850 tons, and has built molds and molded parts for customers in the United States and Europe since 2001.

Phone 02-8522-9739

By 昌昊興業 (Chang-Hao) · Updated

One injection molding cycle in six steps

Injection molding forces molten plastic from a heated barrel into a closed steel mold under high pressure, cools it, then ejects the part. A mold repeats these six steps for every shot, so part quality in production depends on how stable the cycle is.

Cross-section of an injection molding cycleClamping unit and mold on the left; hopper, barrel and screw on the right. The diagram shows clamping, injection, holding, cooling, opening and ejection in order. 12345 ABC STEP 01 / 06 Clamp Cavity Tie bar Fixed platen Heater band Hopper Cooling line Nozzle Screw Moving platen Ejector pin Core CHANG-HAOINJECTION MOLDING CYCLENOT TO SCALE SECTION A-A
Inside the Chang-Hao molding plant: rows of injection molding machines and resin dryers

Chang-Hao at a glance

Founded
1987
Presses
10
Press tonnage
80–850tons
Employees
50+
Quality system
ISO 9001since 2018
Exporting
2001first US and European orders

Companies we have worked with

Chang-Hao has worked with companies including 3M, ONEIDA, Acer, BenQ, 東亞照明 and ASUS.

  • 3M
  • ONEIDA
  • Acer
  • BenQ
  • 東亞照明
  • ASUS

01 / Mold & Molding

Mold making and injection molding in one company

Chang-Hao set up a dedicated steel mold company in 1992 and merged the mold shop with its molding plant in 2000. Molds are machined in its own tool room, trial shots run on its own presses, and corrections, sample approval and production follow on site.

A Chang-Hao toolmaker fitting components on a mold

Mold making

Twelve steps, from quotation, kickoff meeting and CAD mold design to machining, mold fitting, trial shots, corrections and inspection. The tool room has EDM, milling, turning and surface grinding equipment.

Mold making
  • EDMEDM
  • Milling machineMilling machine
  • LatheLathe
  • Surface grinderSurface grinder
Injection molding machine JW-850CF at the Chang-Hao plant

Injection molding

10 presses from 80 to 850 tons. After the trial run the customer reviews and approves the samples, and only then does production start.

  • Details confirmed and quoted from your sample or drawing
  • Mold trials, texturing and mold corrections
  • Production, packing and shipping after sample approval
  • Robot arms for part removal on some presses
Injection molding

02 / Presses

10 injection molding machines, 80 to 850 tons

Press tonnage is the force a press uses to hold the mold halves shut, measured in tons. A larger projected part area and higher injection pressure need more tonnage, so large housings and panels need the big presses and small parts fit the small ones.

Equipment
Chang-Hao presses by tonnage (one square per press)
0900801001401802602805008505 presses3 presses2 pressesPress tonnage (tons)
Chang-Hao presses by tonnage
Press tonnagePresses
80 t1
100 t2
140 t1
180 t1
260 t1
280 t1
500 t1
850 t2
Total10

On the shop floor

03 / Workflow

Mold development in 12 steps, from quote to delivery

Every mold follows the same sequence. Trials and corrections can repeat until samples meet the customer’s requirements; only then is the mold complete.

Mold making
  1. PLAN

    1. 01

      Quotation

    2. 02

      Kickoff meeting

    3. 03

      Mold design

    4. 04

      Production plan

  2. BUILD

    1. 05

      Steel and drawings

    2. 06

      Machining

    3. 07

      Mold fitting

  3. VERIFY

    1. 08

      Mold trial

    2. 09

      Corrections

    3. 10

      Inspection

    4. 11

      Mold complete

  4. DELIVER

    1. 12

      Delivery

04 / Products

Products and markets

What Chang-Hao makes today:

  • 01Networking equipment housings
  • 02Plastic parts for computer, communications and consumer electronics peripherals
  • 03Semiconductor-related parts
  • 04Thermal module housings
  • 05BBU (battery backup unit) modules
  • 06Surveillance camera housings
  • 07Home appliance housings
  • 08Voting machine housings
  • 09Pistol housings
  • 10Medical consumables

Sales by region

70% of sales go abroad: Europe 25%, the United States 20%, Japan and Hong Kong 10% each, China 5%. Taiwan accounts for 30%.

Sales by region
Taiwan30%
Europe25%
United States20%
Japan10%
Hong Kong10%
China5%
Assembling the guard and base of a ceiling circulation fan

05 / Affiliate

Affiliate: commercial ceiling circulation fans under its own brand

Chang-Hao began making ceiling circulation fans as an OEM supplier in 2010 and launched its own fan brand, 台灣威力, in 2017. The brand is run by the affiliated company 台灣威力綠能股份有限公司.

Its commercial ceiling-mounted circulation fans are sold in the United States, China, the Netherlands, Hong Kong and other markets, and are built entirely from recyclable ABS plastic.

2010
OEM production of ceiling circulation fans
2017
Own fan brand 台灣威力 launched
2018
Fan sales expand into mainland China
AffiliateVisit welly-fan.com.tw

06 / Since 1987

Chang-Hao timeline, 1987 to 2019

About
  1. 1987

    Chang-Hao (昌昊興業) founded

  2. 1992

    Steel mold company 泉勝鋼模 founded

  3. 2000

    Molding plant and mold shop merged

  4. 2001

    First molds and molded parts for US and European customers

  5. 2010

    OEM production of ceiling circulation fans

  6. 2017

    Own fan brand 台灣威力 launched

  7. 2018

    ISO 9001 certified; fan sales enter mainland China

  8. 2019

    China CCC certified; 華人精品獎 and 台灣品質保證金像獎 awards

07 / FAQ

Frequently asked questions

Where is Chang-Hao located?
No. 67, Lane 431, Huacheng Road, Xinzhuang District, New Taipei City 242, Taiwan. Phone +886-2-8522-9739, email [email protected].
Can you handle everything from mold making to production?
Yes. Chang-Hao merged its mold shop and molding plant in 2000; mold design, machining, trials, corrections and production all take place in-house.
How many presses do you have, and what sizes?
Ten: one 80-ton, two 100-ton, one 140-ton, one 180-ton, one 260-ton, one 280-ton, one 500-ton and two 850-ton machines.
Which certifications do you hold?
ISO 9001 since 2018 and China CCC certification since 2019.
Do you take overseas orders?
Yes. Chang-Hao has made molds and molded parts for US and European customers since 2001; 70% of sales are outside Taiwan, including Europe 25%, the United States 20% and Japan 10%.
Which companies have you worked with?
Companies including 3M, ONEIDA, Acer, BenQ, 東亞照明 and ASUS.
How is the fan brand 台灣威力 related to Chang-Hao?
It is an affiliate. Chang-Hao launched the brand in 2017; it is run by 台灣威力綠能股份有限公司.
What do I need to send for a quote?
A sample or product drawing is enough to start. We confirm the details first and then quote.

Send a sample or drawing for a quote

Molding projects start with your sample or drawing: we confirm the details, quote, then schedule material and production. Please send a sample or drawing of your part.

Phone
02-8522-9739
Email
[email protected]
Address
No. 67, Lane 431, Huacheng Rd., Xinzhuang Dist., New Taipei City, Taiwan