Case Study: How Somsak Transformed His Transformer Business with Chengrui‌

Somsak Boonma, a seasoned transformer manufacturer in Chonburi, Thailand, had spent two decades growing his family-owned workshop into a trusted regional supplier. His business thrived until 2022, when Thailand extreme humidity and volatile material prices exposed weaknesses in his insulation paper supply. Local vendors delivered inconsistent quality—some batches warped during monsoon season, others caused overheating failures. With client complaints mounting and profit margins shrinking, Somsak knew he needed a reliable partner, not just another supplier.

A Google search for "affordable high-temp insulation paper Asia" led him to Chengrui website. What caught his attention wasn’t just the ISO-certified Class H materials, but the clear Thai-language case studies showcasing solutions for Southeast Asian climates. Skeptical yet hopeful, he sent a WhatsApp message to Chengrui sales team at 10:32 PM Bangkok time. To his surprise, Project Manager Li Mei replied within 20 minutes, asking specific questions about his transformer designs.

Chengrui’s approach felt different. Instead of pushing standard products, they analyzed Chonburi’s annual weather patterns and proposed a hybrid cellulose-based paper with enhanced moisture resistance. Their engineers created 3 prototype thickness variations, shipping test samples alongside a detailed comparison video. “They even explained how to adjust our cutting machines to prevent material waste,” Somsak recalls. When monsoon rains flooded his usual supplier’s warehouse, Chengrui airfreighted emergency stock from Guangzhou, arriving 48 hours before a critical client deadline.

The results reshaped Somsak’s operations. Defect rates dropped from 7% to 0.8% within six months, while material costs fell 19%. More importantly, he regained control over production timelines. Now collaborating with Chengrui on customized fire-retardant paper for EV battery components, Somsak reflects: “They treat my small factory like a Fortune 500 account. Last month, their team video-called me from a Chinese power plant to show real-world performance data.”

For Thai industrial suppliers navigating post-pandemic markets, this partnership proves that competitive edge often lies in choosing allies who anticipate problems before they arise.

Why Choose Chengrui‌

Chengrui has decade of experience on global clients need: insulation solutions that outlast extreme climates, not just meet specs. While others sell standardized sheets, our engineers dissect your production challenges like detectives—whether combating Bangkok’s humidity or optimizing cutting patterns to save 14% material waste. We don’t ship boxes; we deliver certainty. Another Thailand motor manufacturer put it plainly: “Chengrui helps us to win the market with expert support and faster response than most China suppliers.”