Plastic Mold Company

SINCERE TECH is a plastic mold company was established in 1979 by our Chairman & General Manager Peter Yang Tzu Yun in China. We are an experienced contract manufacturer of plastic molds (Fabrication of precision molds, plastic injection tool maker) and plastic injection molding. We developed a real know-how in our production system especially for complex works. We integrated many technologies and secondary operations to our process in order to stay one of the leaders of the plastic injection tooling and moulding sector. We are experienced in consumer electronics (telecommunications, computers, GPS…), automotive structural parts, video surveillance systems (safety dome protection), barcode scanners, marine radars, back-light modules for LCD, LED, Ultra precision optical lens parts, household appliances, sport, industrial parts, medical parts and any other industries where plastic injection is needed. We work by having always in mind our goal: building strong long-term partnerships with our customers all over the world (such as Flextronics, Foxconn, Motorola, Matsushita, Sony, Technicolor, Hitachi, Garmin, Ricoh, Bryton, Lifeproof, Venture, Apple, Micros, Seagate, HP, IPH, Yazaki, Peugeot, Toyota…) by proposing very high quality tools and products (Or we also like to call it superior quality) . The company is an expert in exportations and is used to work with all the continents. To resume, SINCERE TECH group is specialized on one hand to the plastic injection mould fabrication (Plastic Mold maker) and on the other hand in the production (Plastic injection molding) of plastic and thermoplastic molded parts through many different secondary processes with high value-added (Like double injection, overmolding, insert molding, silk-screen printing, dip-coating, sputtering or plasma enhanced chemical vapor deposition, EMI shielding…).


SINCERE TECH group can manage numerous processes for your plastic components. Indeed, the company can handle your plastic part needs from the design of the mould to the part fabrication through mould manufacturing and the integration of many secondary processes. You won’t need any more to have many different suppliers for your plastic products, SINCERE TECH can be your only stop.

Currently with over 350 employees in 3 manufacturing sites in Taiwan, 1 in China and 1 in Thailand and a production around 400 moulds/year (With offices in China, Singapore, Japan, United States and Thailand and also a joint-venture with Muto-Seiko in China) we have the capability to meet all your precision injection mold making and high quality plastic injection molded parts requirements. SINCERE TECH is a very innovative company which is always at the top of the technology (CNC technology, IMD, IMF, IML, IMR, two shot injection, insert molding, silk-screen printing, Dipping process, sputtering, EMI shielding, Laser graving, Ultrasonic Welding, RHCM molding, double injection molding, optical lens molding…). SINCERE TECH has been able to adapt to market changes and always improve itself through innovation thanks to very active teams of Research and Development and Designers. Our experience in plastic injection tooling of more than 30 years makes us specialists in the mold fabrication and plastic injection molding. This permits us to have a very competitive Quality/Cost ratio. Moreover, SINCERE TECH International Technology Inc received important quality accreditations such as ISO 9001, ISO 14001 or ISO/TS 16949.

Company Policy

Our annual production of around 400 different plastic injection molding tools / moulds and hundreds of different plastic parts (and molding of millions of these parts) gives us the experience and capacity to meet customer requirements and schedule which is one of our group’s strength. Our main purpose is achieving customer satisfaction by understanding and bringing personalized solutions to the projects and ideas of our customers. Many companies pretend they propose very high quality and low cost. Actually, you need to choose. In SINCERE TECH we chose a very high quality model respecting the highest standards on the market. With this high quality moulds and plastic parts, we propose a reasonable price, it means a competitive price in comparison with the superior quality proposed. There is no mould too complicated for us: our experience allows us to be able to respond to all your problems regarding complex tooling (Double injection molding, many lifters/sliders, high respect of dimension tolerances for more info plase go to…). Contact us and we will help you to realize your projects.



The Right Stuff

During the past 50 years, aeronautics technology has soared, with plastics playing a major role in both pragmatic improvements and dramatic advances. In aircraft, missiles, satellites and shuttles, plastics and plastic materials have enhanced and sped significant developments in civilian air travel, military air power and space exploration. For many of the same reasons that make them the materials of choice for such a variety of products that benefit our lives, plastics are the right stuff in aerospace. we could make Plastic Molds and then building the molding company to produce those molds to make plastic components

From Necessity to Invention

World War II accelerated the entry of plastics into aerospace both because other materials were scarce and because the possibilities for the materials’ use were already being envisioned.

During the war years, vinyl resins became a major substitute for rubber in Air Corps applications such as fuel-tank linings and fliers’ boots. Plastics also began to be appreciated as first-choice materials. Virtually transparent to electromagnetic waves, the plastic used in radomes, which housed radar installations, allowed the waves to pass through with minimal loss, maximizing transmission to night-flying bombers. Its introduction was hailed as having significantly advanced the technology of airborne radar.

The development of plastics that literally could “take the heat” associated with many aerospace applications and the launching of the U.S. space program spurred additional interest and extensive research in plastics for flight. Soon, plastic materials were common in aerospace for everything from interior trim in airplanes to nose cones for missiles. New words became familiar as “solid fuel boosters” on rockets and “ablative shields” for reentry came to rely on plastic materials. And when man landed on the moon, so did plastics.

Taking Off

The diversity of plastics and plastic-composite materials provides the qualities needed for a wide variety of aerospace needs.

Plastic materials can be flexible enough to withstand helicopter vibration but rigid enough to ensure safe cargo. They can be transparent for easy observation, shatter resistant and offer ballistic protection. And, significantly, they can be both lightweight and strong.

In the 1970s, the oil crisis forced aerospace companies to design aircraft that used less fuel. This meant more efficient engines, improved aerodynamics and reduced aircraft weight. It also meant a role for plastics. Today, jet engine manufacturers increasingly use plastics for the same reasons: reliability, efficiency, fuel savings and improved performance.

The heavier the vehicle, the more fuel it takes to power it. For jetliners, the weight-to-fuel impact is tremendous. Just a one-pound reduction in weight translates into $1,000 in lifetime fuel savings. As composite engines can offer weight reductions of some 300 pounds over other materials, savings can be enormous.

Plastics also save fuel and money because their smooth contours improve aerodynamics. And plastics, which are less expensive to manufacture than heavier materials, produce parts that are more resistant to wear, require less upkeep and are easier to repair.

In the structures, interiors and functional parts of air and space craft, new uses continue to be found for plastic materials, and new plastic materials continue to be created to meet aerospace needs, a plastic molding company need plastic materials fom time to time because they have lots of cusotmer that needs plastic components liket automotive field,
aerospace etc.

A Show of Force

Plastic-composite materials are especially prevalent in today’s sophisticated helicopters and other rotor craft. For these aircraft, the toughness, flexibility, crashworthiness and cost savings of plastic materials have motivated their large-scale use, both structurally and mechanically. These vehicles showcase how plastics can be tailored to fit a variety of needs, including opposing ones.

Helicopters, which vibrate a great deal, can be called on to carry heavy payloads of equipment and personnel. The design of these vehicles calls for one set of materials that can compensate for the stresses caused by vibration and another that are stiff enough to hold up under a heavy payload. Plastics can do both, and more.

In military applications of rotor craft, plastics have been on the front lines of innovation. A new entry into the field, the prototype X-wing craft, sports sophisticated plastic-composite wings that act as a rotor during takeoff and landing but lock into a set position once in the air. The stresses inflicted on such a craft are numerous and varied. Only stiff yet light composites can stand up to them. Though developed for military purposes, the X-wing is believed to have potential as a commercial shuttle and to be jet-powered. Other modern military rotor vehicles – including vertical takeoff aircraft, a gunship and a minesweeper – rely heavily on plastic materials to accomplish their specialized tasks.

Plastics also are being, or are expected to be, used extensively for other innovative military craft. One material’s near invisibility to radar makes it indispensable for “stealth” aircraft, which designers hope to make undetectable to infrared and optical spotters. And plastic fibers could play a significant role in a proposed blimp that would warn naval forces of surface-skimming missiles. Such vehicles are also being considered for nonmilitary use in fields such as forestry and scientific observation.

Up to the Challenge

The air and space craft of the next century increasingly will be made of plastics. Small composite planes will flourish, and commercial aircraft will soar with plastic wings and tails. The military will continue to depend on plastics to create ever lighter aircraft with fewer parts and the ability to evade detection. New aircraft designs with rear-mounted engines will rely on plastics to take the stress and better allocate weight. Still lighter materials will increase the crafts’ capacities for more sophisticated avionics and other on-board systems. And plastics are expected to answer many of NASA’s calls for materials to create and perfect high-performance supersonic/hypersonic aircraft, nuclear space power systems and space stations. to make aircraft plastic components please find a professional plastic mold company and the molding company to support your market, go to our factory that we could solve your problem,

Plastic Box Mold

Do you looking for plastic box mold?

If so, I would introduce you a plastic box molding company who has been in the industry for over 20 decades – DongGuan Sincere Tech

Founded in 2005, ST has cultivated a production team of comprehensive technology and rich experience. ST now is proudly to be one of Famous Mold Manufacturer China Suppliers.ST works on various kinds of plastic box mold, such as crate mould, pallet mould, beer and bottle box mould, storage box mould, folding box mould and so on.

Not only this type of plastic molds which SINCER ETECH makes, but also automobile molds and all other custom plastic molds, please go to to get more detail info.

plastic box mold making si same processing like other type of plastic molds making, here  are some procedues to let you know the basic information about plastic molds making, no matter automobile mold, toy mold, home appliances molds. car molds, household molds, plastic box molds etc, all the manufacturing p

rocess will be the same,The making a custom plastic molds involves a series of steps listed below, this is only A general procedure.

  1. Part design and mold structure analysis, then come to mold design process by using AUTOCAD or UG software.
  2. Mold manufacturing by using CNC,EDM, wire-cut, milling,polishing process and so on.
  3. Mold fitting and assembling the mold. Up to this step, the most important job has been done. A mold has been made.
  4. Mold trial process: Introduction of the plastic material in the heated chamber. The plastic material is mainly in the form of pellets which are liquefied by the high temperatures in the chamber.
  5. The liquefied material is allowed to flow into the mold that is used to make the plastic molding parts. It is commonly referred to as the shot.
  6. The material is allowed to cool and solidify while in the injection mold. Temperature can be regulated by using of cold water pipes or oil pipes. This is to cool or lower the temperatures to facilitate faster cooling of the molds.
  7. The plastic molding parts are then forced out of the mould once they fully solidify, the mold closes and the process is repeated, this repeated processing we called massive production.

The future of plastic molding

  Plastic molding is advancing over the years. The thinnest materials that the first injection molding machine could make were about 2.5 mm and the capacities of the discs was less than 1 GB. With advancement in technology, molds being made today can be as thin as 0.5 mm and can

hold 20 GB. Today, many molding companies are specializing in the production of particular parts in order to increase the quality of molds being produced. The increased number of companies in the business of plastic molding are increasing. This is expected to result in a drop in the prices of plastic molds in the future. It is also anticipated that companies will start using non-plastic materials for making molds in several years to come.

There are different kinds of plastic molds and plastic molding parts depending on the method you use to make them, this is depending on your requirement projects. go to and send us your requirement, we review your part design and quote you a competitive price. If you are traveling in China we would like to invite you to visit our factory.

If want to know more about plastic box mold, please go to, hope this will help you.