About Us

Pan Pacific Metalware Manufacturers Ltd. (PPM)

Company Overview:

Neo Pan Pacific Metal Manufacturing Ltd.(Neo PPM) is a Hong Kong based company specialize in die casting and its related manufacturing processes.
The company is the Joint Venture between Pan Pacific Metal Manufacturing (Dongguang) Ltd. (50+ years’ experience) and Sun Wing Hing painting industrial (Shenzhen) Ltd. (30+ years’ experience).  Neo PPM has a combination of metal casting and coating technological advances from both founding companies for the much demanding requirement of the industries.

PPM milestone:

1952      Founder Robin Pan started die casting technology in Shanghai district
1956       Engineered hydraulic cold chamber machine for communication and aerospace industries
1958       Established Modern Metal Manufacturer Ltd., one of the first Zine die casting factory in HK
1966       Established Pan Pacific Metal Manufacturers (Hong Kong) Ltd.
1968       Produced the first Zine die casting machine in HK
1978       Imported advanced machineries from Italy and Japan, startup Aluminum die casting dept.
1980       introduce the use of CAD/CAM, CMM and EDM for tooling development
1987       setup the first pilot manufacturing site in Dongguan Humen China (Tai Ping PPM)

1995       setup the first fully intergraded die casting factory in Dongguan Humen China (Zengkou PPM)
1999       ISO9000 certified
2000       setup CNC precision dept
2002       Established OPP, an Magnesium Application and Testing Site with LK Machinery (our Mg dept)
2003       OPP obtained QS9000 certificate
2008       Relocated to Dongguan Humen Chigan Fu Ma Industrial Park (Chigan PPM)
2009       Obtained ISO T/S 16949
2010       Obtained ISO 14000
2018       Relocate to Dongguan Humen Nanzha, JV between PPM and XYX to establish Dongguan Neo Pan Pacific Metal Manufacturing Ltd.

Why choose Die-Casting?

Die-Casting process has a lot of advantages over other methods of production for parts.



One of the main advantages of die-casting is that it is a process that is capable to producing complex parts with high dimensional accuracy, in other words, it is capable of producing parts close to the net shape specifications. This characteristic allows us to greatly reduce the amount of secondary operations in order to meet the requirements of our customers, therefore, this result in cost reduction for our customers that have implemented other form of production. Moreover, die-casting process allows us as producer to maintain the consistency of our products as all the products will be produce from the same die for the lifetime of the tooling.



Widely Use in the automotive and aviation industry due to its corrosion resistance, high strength and rigidity, its lightweight compared with zinc as well as its ability to dissipate heat rapidly. Its lightness made it suitable for portable products as well as products that are under pressure of cutting down weight such as the automotive industry where it is seeking ways to increase its efficiency thus improving its fuel economy.



The common application for zinc die-casting parts are for telecommunication where they serve as electronic connectors as well as covers, chassis and frames due to its shielding properties. However, they can also be found in other applications such as the automotive industry, computer industry and hardware decorative purposes and so on.



Widely use in portable electronics and equipment such as handhelds, mobile phones, power tools, minidisc player and automotives, etc… The ability of this material to be cast in very thin wall thickness and still maintain excellent rigidity and stiffness makes it the no.1 choice for portable purposes. Its ability for EMI shielding and high conductivity and heat transfer makes it even more appealing as casing for electronic and heavy duty appliances. Furthermore, due to its lower specific gravity (i.e. lower weight) compared with aluminum and zinc, increases its popularity as an alternative solution for weight reduction requirement in the automotive industry.

Services and Solution


Engineering Team

Strong engineering team with average 10+ years’ experience in the respective industries.  Utilize DFM and APQP/PPAP tools for early product development.


Mold Design

Utilize the latest software in CAE/CAD/CAM and flow analysis.


Tool Room

• Precision CNC machines Centers and EDM machines for building tools, dies, jigs and fixtures in house.

• Complete control for tool quality, lead time as well as maintenance over the entire tool life.


Secondary Operations

• Hydraulic and mechanical presses
• Drills
• Milling Machines
• Lathes
• CNC center
• Polishing and buff machines and vibrators for special finishing.



• 33m 450°C oven for Teflon type of coating curing

• 30m 350ºC rack type oven for power coating as well as wet paint.

• 33m 250°C oven for conventional coating curing

• Wet Paint / Powder Coating

• Automatic coating lines for both compressed air type and electro-static type.

• Automated clean room coating system (Class 10000)

• Automatic Chromate Line



• Assemble & Test per our customers’ specs as a semi-finished product

• Dedicated line solution

• Inspect & Package for Export Direct to Customers Overseas


Quality Assurance

• ISO 9001
• IATF16949
• ISO14001
• Coater Quality Approved by DuPont, Whitford and PPG
• RoHS Compliant
• Coordinating Measuring Machine
• Spectrometer


Facilities & Capabilities

• Engineering
• Tooling
• Zinc/Aluminum/Magnesium die casting
• Polishing
• Pretreatment
• Coating

Quality Assurance

Contact Us

China – Hong Kong
Unit 14, 13/F, Thriving Industrial Centre,
26-28 Sha Tsui Road, Tsuen Wan.
Telephone: (852) 28610231
Fax: (852) 28610092

China – Humen
Address: No.6, Lane 10, Wen Ming Rd., District 4, Nanzha Humen Town, Dongguan City, Guangdong, China.

Telephone: (86) 769 82888138
Fax: (86) 769 85115280
Email: marketing@neoppm.com

Postcode: 523921
Office Hours: Monday-Friday from 8:00 am – 5:30 pm
Saturday and Sunday Closed



    Frequently Asked Questions

    Material Selection:

    Die-casting alloy selection is based on the application and functionality of the product or part in question. Different metal have their own characteristic, in other words they all have their advantages and disadvantages. After selecting a sensible metal for production, selecting the right die-casting alloy is also a very crucial for ensuring that the part of product will meet the design specifications, since every alloy has its own physical and mechanical properties due to their distinct chemical compositions.

    Aluminum Alloys:

    • Relatively lightweight (Density 2.7 g/cm3)
    • High resistance to corrosion
    • Good mechanical properties
    • Good dimensional stability
    • Good conductivity and heat capacity
    • Suitable for heat sink, heaters, structural requirement for automotive,
    power tools and electronics designs

    Zinc Alloys:

    • Density 6.5 g/cm3, not recommended for parts over 1 Kg
    • Considered as the easiest to cast
    • Longer tool life due to lower temperatures and pressures
    • Ability to be produced in thin wall thicknesses and tighter tolerances
    • Relatively cheap to produce comparing to Aluminum and Magnesium with the
    same processes
    • Suitable for electronic housing, connectors, home appliances’ handles and
    decoration products

    Magnesium Alloys:

    • Lightest weight among commonly used structural metal (Density 1.8 g/cm3, 30% lighter than aluminum) 
    • Thin wall casting, further reduce weight up to 50% with proper design comparing to conventional Al casting
    • High strength to weight ratio
    • Excellent damping ability
    • EMI shielding Ability 
    • Suitable for handheld devices, weight reduction solution for automotive
    and electronic industries

    Mould Life:

    Tool life depends a lot on product design, material use and the quantity we produce at each batch. 
    Generally speaking, the thinner the wall, and/or the more complex the parts, the shorter the tool life. 
    Temperature also plays a major factor in tool steel erosion, while Aluminum has a higher casting temperature, its tooling life tends to be shorter, for example.
    Here is a general tool life range for each material:
    Aluminum:  60,000-100,000 shots
    Zinc: 500,000 to 1 million shots
    Magnesium: 100,000-200,000 shots
    Trimming tool: 300,000 – 1 million
    Jigs & fixture: with proper maintenance, pretty much forever.
    Whether a tool can be used depends also on the quality or customer’s acceptance level.  During different production stages there will be crack,erosion and deformation on the tool and parts.  As long as there is a good communication between producer and customer, tool life can be extended with tooling design and quality level without added a lot of cost.

    MOQ :

    We are not a greedy company, we don’t 1 million parts per order, however,there are limitation in our industry and a lot of negative effects when we produce at small batches.  There are thermal shocks, scraps and wares on the tool, at extreme cases those will reduce tool life to half.  Die casting is supposed to be a highly cost effective high volume metal solution.  To get the best from die casting, we need high volume in order to achieve the best balance in cost and quality for you.
    Depending on the product size, we recommend the following MOQ
    Aluminum: MOQ 5,000-10,000 shots per order, total consumption of a tooling within 2-3 years.
    Zinc:  MOQ 50,000 – 100,000 per order, total consumption of a tooling within 3-5 years.
    Magnesium:  MOQ 5,000 -10,000 shots per order, total consumption of a tooling within 2-3 years.
    For very low quantity, we recommend customer to choose other manufacturing
    method such as conventional casting or CNC machined parts.
    Can I use the same tool for different material?

    The answer is Yes and No.
    Yes: If the tool can fit on the machine, it will be possible to put all
    three materials with the same tool. 
    No: There are a lot of know-how for each material, with flow, venting and
    heat balance and such.  You may be able to get some parts, but there will be a lot of hidden defects.
    We occasionally switch material for customer as testing and project
    development.  Please consult our engineering team for the technical details.

    What is Thin-wall casting?  How thin is thin?

    Comparing to conventional gravity sand casting, die casting is already considered as the “thin wall solution” as thickness can go from 5-10 mm down to 2-2.5 mm.  In recent years, there are many other “thin wall solution” that can go to the extreme.
    Thinnest possible wall thickness:
    Aluminum: 0.55mm
    Zinc: 0.5 mm
    Magnesium: 0.55mm
    If PPM, we DO NOT have the machinery and expertise to achieve these extreme level.  Usually those are very specialized processes that are for some narrow and niche market.  There are also limitation in shape, part function and possible trade-off in terms of cost, scraps, and lower tool life. However, PPM is not completely technologically backward, we can still achieve a certain level of thin wall for a more normal range of products.

    PPM thin wall capability:

    Aluminum:  normal wall thickness 2-2.5mm, minimum 0.8-1.0mm
    Zinc: normal wall thickness 1.5-2mm, minimum 0.8-1.0 mm
    Magnesium: normal wall thickness 1.2-1.8mm, minimum 0.6-0.8mm
    *thin wall casting is limited to certain size and shape.  Please consult our
    engineering team for feasibility study.

    Finding out the best coating for you:

    • Teflon® coating
    • Powder coating
    • Wet Paint coating
    • Electrolytic plating