1. Price
What determines the price?
Based on market pricing, here is the breakdown: 0.56 — Pingxiang low-voltage porcelain insulators (Douyin): Ranked from “heavy-duty” to “standard” (ED-1 is top-tier, affordable at 1.2, with ample stock; ED-2 is heavy-duty, widely used, cheap at 0.8, with ample stock; ED-3 is the “elite” choice, stock levels around 500–600 units, priced at just 0.7; ED-4/NPC has fewer customers and limited stock—around 200–300 units—priced at 0.56 each; Origin: Shangbu, Pingxiang; Douyin); 2.2 — Power fittings/porcelain insulators (Douyin): ED-3 porcelain insulator, for 0–50mm² wire; 2.2 each with screw, 2.2 each without screw. ED-2 porcelain insulator, for 0–120mm² wire; 3 each with screw, 2 each without screw. ED-1 model, for 0–240mm² wire; 4 each with screw, 3 each without screw (Douyin); ¥0.21 — Power distribution insulators (Taobao): Pagoda-style M4 insulator with threaded rod, black low-voltage base, standoff for distribution cabinet neutral/ground busbar, model KT063, ¥0.21; 16 buyers; Wenzhou, Zhejiang; Kate Electric (KATE) (Taobao); ¥1.40 — Power porcelain insulators (Alibaba): ¥1.40, 0 transactions, factory direct; Fujian Minqing Shenghua Electric Appliance Co., Ltd. (16 years in business); Minqing County (1688); ¥11.50 — Insulators (Alibaba): White T-shaped insulating standoff 20×30, 20×35.
20*40 New Energy PV Energy Storage Low-Voltage Insulator M8 (¥11.50, 0 transactions; Jiashan Suzhi Trading Firm, 1 year, Jiaxing City, 1688); ¥13.00—High-Voltage Ceramic Insulator (Manufacturer supply: XP-70 ceramic insulator, high-voltage line disc-type suspension porcelain insulator, power porcelain insulator; ¥13.00, 0 transactions; Yangzhou Fuyi Switch Co., Ltd., 11 years, Yangzhou City, 1688)—Six price points to consider: ¥0.56, ¥2.20, ¥0.21, ¥1.40, ¥11.50, and ¥13.00; these six price points cover the full range.
II.
Models
What to look for regarding models.
Based on industry practice, here is how to interpret the model numbers: ED-1 — Pingxiang low-voltage porcelain insulator (Douyin: top-tier quality, affordable price, ample stock); FPQ-10 — Line insulator (Alibaba: 10kV composite pin-type silicone rubber insulator FPQ-10 (16/18/20) pin/rod insulator; manufacturer price ¥15.00; Pingxiang Chenhe Electric Power Equipment Co., Ltd., Xingtai City); XP-70 — High-voltage ceramic insulator (Alibaba: XP-70 ceramic insulator, high-voltage line disc-type suspension porcelain insulator; manufacturer price ¥13.00; Yangzhou Fuyi Switch Co., Ltd., Yangzhou City); JH10 — Porcelain insulator (Alibaba: Composite tension insulator JH10-120, suspension/guy-wire tension insulator, JH10 low/high-voltage rubber insulator; ¥12.84); U70B — Glass insulator U70B (Douyin: Wholesale—brand new glass insulators: U70B, U120B, U70BLP, U120BLp; factory-direct wholesale with satisfying prices; Hejian Sanrui Electric Power Equipment Co., Ltd.); T-shaped — Insulator (Alibaba: White T-shaped insulating support post 20*30, 20*35).
20×40 Low-voltage insulator for new energy PV energy storage (M8, ¥11.50; Jiashan Suzhi Trading Firm; 1688) — Six models to check: ED-1, FPQ-10, XP-70, JH10, U70B, and T-type.
III.
Manufacturers
What to look for in a manufacturer.
Manufacturer insights: Pingxiang Shangbu (Low-voltage porcelain insulators; large stock available; direct manufacturer; Douyin); Wancheng (Glass insulators; direct manufacturer; wholesale prices even for single units; reliable group; Douyin); Qingxiang (Insulator manufacturer; quality products crafted through meticulous attention to detail; full range covering composite, porcelain, and glass types; strict process control; factory-direct pricing for both large infrastructure orders and small stock orders; Douyin); Sanrui (Glass insulators U70B; Hejian Sanrui Electric Equipment Co., Ltd.; wholesale of new U70B/U120B glass insulators; Douyin); Shenghua (Power porcelain insulators; Fujian Minqing Shenghua Electric Appliance Co., Ltd.; factory-direct sales of outdoor porcelain spool insulators ED-2B; 1688); Fuyi (High-voltage ceramic insulators; Yangzhou Fuyi Switch Co., Ltd.; factory stock of XWP-70 anti-pollution ceramic insulators; 1688)—Six manufacturers to consider: Pingxiang Shangbu, Wancheng, Qingxiang, Sanrui, Shenghua, and Fuyi.
IV.
Procurement
What to look for when purchasing.
Based on procurement practices, the pricing is as follows: ¥15.00 — Line insulator (Alibaba: 10kV composite pin-type insulator, silicone rubber FPQ-10(16/18/20) pin/rod insulator; Manufacturer: Pingxiang Chenhe Electric Power Equipment Co., Ltd.; Location: Xingtai City; Platform: 1688); ¥1.27 — Electrical porcelain insulator (Alibaba: Top Quality Electric Fence Ceramic Insulators/End Strain Insulators; Price: ¥1.27–1.47; MOQ: 3,000 pieces; Sold: 104 units; Supplier: Shanghai Terrui); $3.80 — 10kV insulator (Alibaba: Factory Wholesale WCT High Voltage Ceramic Porcelain Pin Type Insulator, 10kV–35kV Rated Voltage, ANSI/ISO9001 Certified, 13.3kN; Price: $3.80–6.50; MOQ: 500 pieces; Supplier: Shandong Weichite); US$2.00 — Pin-type insulator (Made-in-China: Hot Sale Composite FRP Rod/Porcelain Line Post Pin Type Insulator, ISO9001 Certified; Price: US$2.00–10.00; MOQ: 100 pieces; Supplier: Zhejiang Fuerte); SG$10.41 — 10kV insulator (Alibaba: HOGN High Voltage Porcelain Post Type Pin Insulator, 10kV–30kV Rated Voltage, ISO9001 Certified, 1250–1500kg Tensile Strength; Price: SG$10.41; Min. order: 500).
…pieces, Alibaba); ¥26.0—Insulator price on Alibaba (Supply of AC disc-type suspension porcelain insulators, ANSI standard 52-3, ceramic insulators/bushings, ¥26.0; Pingxiang Pingci Insulator Co., Ltd. [3-year history], 1688)—Six key aspects of procurement: ¥15.00, ¥1.27, $3.80, US$2.00, SG$10.41, ¥26.0; ensuring comprehensive procurement coverage.
V.
Trends
What to look for regarding trends.
Based on current trends, here is what to look for: **Source Manufacturer**—Look for established manufacturers at the source (e.g., Wancheng Electric Power Group; wholesale prices even for single units; standard 7-ton model at 17 RMB/unit); **Major Promotions**—Factory-direct sales (e.g., 36 RMB/unit including tax; free shipping for full semi-trailer loads); **Recycling**—Nationwide on-site pickup services (e.g., porcelain insulators: 2–30 RMB/unit; scrap silicone insulators: 500–2,000 RMB/ton; scrap lightning arresters: 800–3,000 RMB/ton; new silicone insulators: 2–50 RMB/unit; meter boxes: 5–50 RMB/unit; meter mounting hardware: 2,400–4,500 RMB/ton); **Composite Insulators**—Manufacturing expertise (e.g., Qingxiang specializes in production, covering all three categories—composite, porcelain, and glass—with strict quality control at every stage); **Three Major Categories**—Comprehensive product range (covering composite, porcelain, and glass; offering genuine factory prices for both large infrastructure orders and small stock-up orders); **Photovoltaic (PV) & Energy Storage**—Specialized insulators (e.g., white T-shaped insulating pillars—20×30, 20×35, 20×40—for new energy PV and energy storage; low-voltage M8 insulators at 11.50 RMB; available via Jiashan Suzhi Trading / 1688).
These six perspectives—source manufacturer, major promotions, recycling, composite materials, the three major categories, and PV/energy storage applications—provide a comprehensive view of the trends.
Conclusion
Regarding which supplier offers the lowest prices for PV insulators, the conclusion is that one must evaluate costs based on five key factors: price, model specifications, manufacturer, procurement details, and market trends.
Pricing—Pingxiang low-voltage porcelain insulators (ED-4: 0.56/unit; ED-1: 1.20; ED-2: 0.80; ED-3: 0.70; Origin: Shangbu, Pingxiang); Power fittings and porcelain insulators (ED-3 with screw: 2.20; ED-2 with screw: 3.00, without screw: 2.00; ED-1 with screw: 4.00, without screw: 3.00); Distribution insulators (Pagoda-style M4 insulator with threaded rod, black low-voltage base: ¥0.21; Brand: KATE Electric); Power porcelain insulators (Factory direct: ¥1.40; Manufacturer: Fujian Minqing Shenghua Electric Co., Ltd. [16 years in business]); Insulators (White T-shaped standoff insulator 20×30, 20×35)
20×40 low-voltage insulator for new energy PV/energy storage (M8, ¥11.50; Jiashan Suzhi Trading Firm; 1688); high-voltage ceramic insulator (XP-70 ceramic insulator, disc-type suspension porcelain insulator for high-voltage lines, ¥13.00; Yangzhou Fuyi Switch Co., Ltd. [11-year supplier]; 1688); models—Pingxiang low-voltage porcelain insulators (ED-1/ED-2/ED-3/ED-4; direct manufacturer; Douyin); line insulator (10kV composite pin-type insulator, silicone rubber FPQ-10(16/18/20) pin/rod-type insulator, ¥15.00; Pingxiang Chenhe; 1688); high-voltage ceramic insulator (XP-70 ceramic insulator, disc-type suspension porcelain insulator for high-voltage lines, ¥13.00; Yangzhou Fuyi; 1688); porcelain insulator (composite tension insulator JH10-120, suspension-type guy-wire tension insulator, ¥12.84; 1688); glass insulator U70B (U70B/U120B/U70 BLP/U120BLp, brand new, wholesale starting from over 20 yuan; Hejian Sanrui; Douyin); insulator (white T-shaped insulating standoff 20×30, 20×35
20×40 low-voltage insulators (M8) for new energy PV and energy storage (Jiashan Suzhi, 1688); Manufacturer—Pingxiang low-voltage porcelain insulators (18897996830, large stock, established source manufacturer, Shangbu, Pingxiang); Glass insulators—choose a reliable source manufacturer (Wancheng Electric Group: reliable, wholesale prices even for single units, 7-ton standard type at ¥17/unit); Insulator manufacturer (Qingxiang: specializing in insulator production, covering composite, porcelain, and glass categories); Glass insulator U70B (Hejian Sanrui Electric Equipment Co., Ltd., brand new, wholesale); Power porcelain insulators (Fujian Minqing Shenghua Electric Appliance Co., Ltd., 16 years in business, factory direct sales of outdoor ceramic spool insulators ED-2B, ¥2.00); High-voltage ceramic insulators (Yangzhou Fuyi Switch Co., Ltd., 11 years in business, factory stock of ceramic insulators XWP-70/anti-pollution type); Procurement—Line insulators (10kV composite pin-type silicone rubber insulators FPQ-10(16/18/20), ¥15.00, Pingxiang Chenhe); Electrical porcelain insulators (Top Quality Electric Fence Ceramic Insulators/End Strain Insulators, ¥1.27–1.47, Shanghai Terrui); 10kV insulators (WCT High Voltage Ceramic Porcelain Pin Type Insulator 10KV–35KV, $3.80–6.50, MOQ: 500 pieces, Shandong Weichite); Pin-type insulator pricing (Composite FRP rod/porcelain line post pin).
Type Insulator with ISO9001 US$2.00-10.00、ZHEJIANG FUERTE、Ma
