In the fast-paced world of electronics manufacturing, printed circuit boards (PCBs) are the backbone of every device—from the smartphone in your pocket to the industrial machinery powering factories. But even the most advanced PCBs are vulnerable to the elements: moisture, dust, chemicals, and temperature fluctuations can compromise performance and shorten lifespan. That's where conformal coating comes in. This thin, protective layer acts as a shield, ensuring PCBs stand up to harsh environments and deliver reliable performance. As Indonesia's electronics sector booms, with local manufacturers increasingly partnering with global brands, the demand for trusted conformal coating suppliers has never been higher. In this guide, we'll introduce you to the top 10 conformal coating suppliers in Indonesia, exploring their expertise, specialties, and what makes them indispensable partners for electronics businesses of all sizes.
When it comes to longevity and reputation in Indonesia's conformal coating industry, PT. Electronic Coatings Indonesia (ECI) leads the pack. Founded in 2008 and based in Jakarta's industrial hub, ECI has grown from a small local operation to a nationally recognized name, serving clients across automotive, consumer electronics, and medical device sectors. What truly sets ECI apart is its unwavering focus on quality—all processes are ISO 9001:2015 certified, and the company strictly adheres to RoHS and REACH standards, making it a trusted partner for international OEMs.
ECI offers a full suite of conformal coating solutions, including acrylic, silicone, urethane, and parylene coatings. Their state-of-the-art facility in Cikarang features automated spray and selective coating lines, capable of handling both high-volume production runs (up to 50,000 PCBs monthly) and intricate prototype work. Clients praise ECI's technical team, which provides personalized consultations to recommend the ideal coating material based on the PCB's end use—whether it's a high-moisture environment like a washing machine control board or a high-temperature industrial sensor. Recent expansions have added dedicated lines for medical device PCBs, complete with ISO 13485 certification, solidifying ECI's position as a versatile, client-centric partner.
Nestled in Bandung's creative tech district, CV. TechShield Solutions has made a name for itself by focusing on flexibility and affordability—key priorities for small to medium-sized enterprises (SMEs) and startups. Founded in 2012 by a team of electronics engineers, TechShield recognized a gap in the market: many local manufacturers needed quality conformal coating but couldn't meet the minimum order requirements of larger suppliers. Today, they specialize in small-batch orders (as low as 5 units) while still delivering professional-grade results.
TechShield's service menu includes acrylic and silicone coatings, applied via manual spray or dip coating, with options for selective coating to protect sensitive components. What clients love most is their hands-on approach: the team often provides on-site training sessions on how to apply conformal coating best practices, helping manufacturers optimize their pre-coating cleaning and preparation processes. This educational focus has built strong loyalty among clients in West Java's burgeoning startup scene, particularly those producing IoT devices and consumer gadgets. While they don't yet offer parylene coating, their recent investment in a new selective coating machine has expanded their capabilities to handle more complex PCB designs, making them a rising star in Indonesia's conformal coating landscape.
Based in Surabaya, Indonesia's second-largest city and a hub for marine and industrial manufacturing, PT. Surabaya Coating Technologies (SCT) has carved a niche in serving harsh-environment applications. Established in 2010, SCT initially focused on coating PCBs for fishing boat electronics and oil rig equipment—products that face extreme humidity, salt spray, and vibration. Over time, they've expanded to serve sectors like renewable energy (solar inverters) and heavy machinery, earning a reputation for durability.
SCT's specialty lies in parylene and urethane coatings, both known for their exceptional resistance to chemicals and moisture. Their facility includes a Class 8 cleanroom for parylene deposition, ensuring ultra-thin, uniform coverage even on the most intricate PCBs. Certifications like ISO 13485 (for medical devices) and ISO 45001 (occupational health safety) reflect their commitment to quality and safety. Clients often highlight SCT's rigorous testing process, which includes adhesion tests, dielectric strength measurements, and environmental exposure trials (simulating 5 years of salt spray exposure, for example). For businesses operating in tough conditions, SCT isn't just a supplier—they're a critical partner in ensuring product reliability.
In the heart of Jakarta's Kemayoran industrial zone, CV. Jakarta Precision Coatings (JPC) has built its brand on one core promise: precision. Specializing in selective conformal coating for PCBs with complex component layouts—think densely packed semiconductors, fine-pitch connectors, or heat-sensitive parts—JPC uses advanced robotic systems to apply coatings with pinpoint accuracy, avoiding areas that shouldn't be coated (like connector pins or heat sinks).
JPC's client list reads like a who's who of Indonesia's automotive and aerospace suppliers, including local branches of international Tier 1 automotive parts manufacturers. Their services include acrylic, silicone, and urethane coatings, with a focus on fast turnaround times—critical in industries where production delays cost millions. The company prides itself on its "zero defect" policy, supported by automated inspection systems that check coating thickness and coverage using UV light and microscopy. While their prices are slightly higher than some competitors, clients say the investment is worth it for the peace of mind that comes with JPC's precision and reliability.
Bali isn't just a tourist destination—it's also home to a growing cluster of electronics manufacturers serving the hospitality and marine sectors. PT. Bali Electronic Services (BES) caters to this unique market, specializing in conformal coating for devices like underwater cameras, hotel room control systems, and marine navigation equipment. Founded in 2015 by expat engineers, BES brings a global perspective to local manufacturing, with a focus on eco-friendly practices.
BES offers silicone and acrylic coatings, with an emphasis on low-VOC (volatile organic compound) formulas that align with Bali's commitment to environmental sustainability. Their small but efficient facility in Gianyar handles orders from 10 to 10,000 units, with a particular focus on custom solutions—like clear coatings that preserve the aesthetic of designer PCBs used in high-end hospitality electronics. What makes BES stand out is their understanding of niche markets: for example, they've developed a specialized coating process for PCBs in saltwater environments that resists barnacle growth and corrosion. While they primarily serve local clients, BES has recently started exporting coated PCBs to Australia and Singapore, capitalizing on their reputation for quality in tropical applications.
Sumatra's electronics manufacturing scene is often overshadowed by Java, but PT. Medan Tech Coatings (MTC) is putting North Sumatra on the map. Established in 2012, MTC serves the region's oil and gas, mining, and agricultural sectors, providing conformal coating for PCBs in equipment like drilling sensors, crop monitoring systems, and heavy-duty pumps—all of which operate in dusty, high-temperature, or chemically exposed environments.
MTC's specialty is high-temperature silicone coatings, capable of withstanding continuous exposure to 200°C (and up to 300°C for short periods). Their facility in Medan includes a custom-built oven for curing coatings, ensuring optimal adhesion even in extreme conditions. What clients appreciate most is MTC's on-site technical support: their engineers frequently travel to client facilities in remote areas like Aceh or Riau to conduct pre-coating inspections and post-coating quality checks. This hands-on service has made MTC a trusted partner for companies operating in challenging, off-the-grid locations. While they don't offer the full range of coatings (no parylene yet), their expertise in high-temperature applications is unmatched in Sumatra.
Yogyakarta, known for its universities and research institutions, is home to CV. Yogyakarta Conformal Solutions (YCS), a supplier with a unique focus on innovation and collaboration. Founded in 2014 as a spin-off from Gadjah Mada University's electronics lab, YCS bridges academia and industry, offering not just coating services but also R&D support for developing new coating materials and application methods.
YCS works closely with local universities to test cutting-edge coatings, including water-based and bio-degradable options that reduce environmental impact. Their commercial services include standard acrylic and silicone coatings, with a growing focus on medical device PCBs—thanks to partnerships with hospitals and medical equipment manufacturers in Central Java. YCS is also one of the few Indonesian suppliers experimenting with nanocoatings, which offer enhanced protection in ultra-thin layers (as thin as 100 nanometers). While their production capacity is smaller than Jakarta-based firms, YCS attracts clients who value innovation and sustainability, making them a favorite among startups and research-driven companies.
Bandung's reputation as a manufacturing hub for consumer electronics has made PT. Bandung Advanced Coatings (BAC) a go-to for high-volume coating projects. Founded in 2005, BAC has grown alongside the city's electronics boom, now operating three automated coating lines that can handle up to 100,000 PCBs per month—making them one of Indonesia's largest conformal coating suppliers.
BAC specializes in acrylic coatings for mass-produced items like smartphone chargers, LED controllers, and home appliances. Their automated spray and dip systems ensure consistent coverage and fast turnaround, with most orders completed within 3–5 business days. Certifications like ISO 9001 and RoHS compliance make them a preferred partner for international brands sourcing from Indonesia. BAC also offers value-added services like PCB cleaning and drying before coating, streamlining the manufacturing process for clients. While they don't cater to small batches (minimum order is 1,000 units), their scale allows them to offer competitive pricing, making them ideal for high-volume consumer electronics manufacturers.
Semarang, a port city in Central Java, is a gateway to Indonesia's agricultural heartland, and CV. Semarang Protective Coatings (SPC) has tailored its services to meet the needs of this sector. Since 2011, SPC has specialized in coating PCBs for agricultural electronics—think soil moisture sensors, pesticide spray controllers, and grain storage monitors—devices that face high humidity, dust, and occasional exposure to fertilizers or chemicals.
SPC's focus is on durable, cost-effective silicone coatings, which offer excellent flexibility and resistance to moisture. Their facility includes a dust-free coating booth and a climate-controlled curing room, ensuring consistent results even during Semarang's humid monsoon seasons. What sets SPC apart is their understanding of agricultural clients' budget constraints: they offer tiered pricing for small, medium, and large batches, with discounts for repeat orders. They also provide free sample coatings for new clients, allowing manufacturers to test durability before committing to large orders. While their client base is primarily local, SPC has recently expanded to serve clients in East Java and Bali, solidifying their position as a regional leader in agricultural electronics coating.
As the largest city in Eastern Indonesia, Makassar is an emerging hub for electronics manufacturing, and PT. Makassar Electronic Coatings (MEC) is leading the charge. Founded in 2018, MEC is the youngest supplier on this list but has quickly gained traction by focusing on accessibility and community support. They serve SMEs across Sulawesi, East Nusa Tenggara, and Maluku—regions often overlooked by Java-based suppliers.
MEC offers acrylic coating services for basic electronics like power supplies, audio amplifiers, and small appliances. Their facility is modest but well-equipped, with manual spray and dip coating stations and a small testing lab for adhesion and thickness checks. What makes MEC unique is their commitment to training: they host monthly workshops for local manufacturers on PCB handling, cleaning, and circuit board conformal coating basics, helping to build a stronger electronics ecosystem in Eastern Indonesia. While they don't offer advanced coatings like parylene, their affordable pricing (starting at IDR 5,000 per PCB) and dedication to customer education have made them a beloved local partner. As Eastern Indonesia's manufacturing sector grows, MEC is poised to become a key player in the region's electronics supply chain.
Indonesia's conformal coating industry is as diverse as the country itself, with suppliers ranging from large-scale automated facilities to niche specialists focused on innovation or community support. Whether you're a Jakarta-based consumer electronics giant or a small agricultural tech startup in Sulawesi, there's a supplier tailored to your needs. By prioritizing industry expertise, coating materials, and quality control, you'll find a partner that doesn't just protect your PCBs—they help your products succeed in the global market. As Indonesia continues to grow as an electronics manufacturing hub, these suppliers will play an increasingly critical role in ensuring the reliability and durability of devices used around the world.
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