China Aluminum Windows Accessories Suppliers Roundup

Today's digest surfaces six verified Chinese manufacturers across all four priority categories — EPDM rubber seal strips, sliding window roller pulleys, and aluminum profile assemblies — with a fresh focus on Jiangsu, Hebei, and Guangdong sources not previously covered in this series.

EPDM & Rubber Seal Strip Suppliers

1. Nanjing Demeters Rubber & Plastic Products Co., Ltd.

Location: Gaochun District, Nanjing, Jiangsu | Platform: Diamond Member since 2021, Audited (MIC)

Founded in 1976 under the name Nanjing Gaochun Rubber Factory and restructured as a modern enterprise in 2015, Demeters operates a 30,000 m² facility with roughly 1,000 employees and an annual revenue around US$35M. The factory produces EPDM foam seal strips, hollow weather strips, PVC/TPE/TPV/silicone variants, and rubber molded parts for doors, windows, automotive, and railway applications. 1

Certifications: ISO 9001, ISO 14001, OHSAS 18001; products REACH-compliant and SGS-tested
MOQ: 1,000 meters; custom profiles available (OEM/ODM)
Price range: US$0.40–5.00/m (material and profile complexity dependent)
Production capacity: 10 km/month for seal strips; 500 containers/month export
Export markets: Singapore, Malaysia, Russia, Germany, USA, France, Italy
Direct sourcing: Demeters MIC Store

Buyer note: Strong position for high-volume EPDM foam hollow strips destined for railway, curtain-wall, or window OEMs that need multi-standard compliance. MOQ of 1,000 m is accessible for mid-size orders.

2. Qinghe County Hongli Rubber and Plastic Co., Ltd.

Location: Qinghe County, Hebei | Platform: Diamond Member since 2023, Audited (MIC), 5.0/5 rating

Established 2004, Hongli is part of Qinghe's specialist rubber-products cluster — the same county as Hebei Guangte (covered June 9). The company covers EPDM foam strips, U-shaped strips, container door seals, fire expansion sealing strips, self-adhesive seals, and high-conductivity shielding rubber for windows, doors, industrial equipment, and marine applications. 2

Certifications: Continuous-vulcanization production; standard compliance verifiable on request
MOQ: 100 meters (low entry threshold)
Price range: From US$1.20–1.60/m for standard door/window seals; US$1.50/m typical quote
Specialties: EPDM foam strips, fire-expansion strips, safety contact belt series, shielding rubber
Direct sourcing: Hongli MIC Store

Buyer note: Low MOQ of 100 m and a 5.0-rated Audited store make Hongli worth sampling for EPDM hollow and U-type variants. Price point is higher per meter than large-volume specialists, reflecting smaller-batch flexibility.

3. Hebei Xianghe Rubber & Plastic Products Co., Ltd.

Location: Qinghe County, Hebei | Platform: Diamond Member since 2024, Audited (MIC), ISO 9001:2015 / 14001 / 45001 certified

Founded 2010, Xianghe runs a 10,000 m² facility (7,000 m² built) with 160+ staff and specializes in extruded and molded rubber sealing strips for aluminum window frames, curtain walls, trains, ships, and electric-cabinet applications. 3

Certifications: ISO 9001:2015, ISO 14001, ISO 45001:2018; OEM/ODM/ODM available
MOQ: Tiered — 500–999 m; 1,000–4,999 m; 5,000 m+
Price range: US$0.51/m (500–999 m) → US$0.35/m (1,000–4,999 m) → US$0.23/m (5,000 m+)
Production capacity: 500,000 meters/month
Temperature rating: –50°C to 120°C; Shore A hardness 20°–85°
Direct sourcing: Xianghe MIC Store

Buyer note: Best-in-class on volume pricing among Qinghe seal-strip suppliers encountered so far. At $0.23/m for 5,000 m+, this factory undercuts most Diamond-tier peers for plain EPDM weather seals. Triple ISO certification and a 2024 Diamond status indicate fast-growing export infrastructure.

EPDM weather seal strips for aluminum window frames — EPDM extruded hollow-profile weather seals from Hebei Xianghe 3

Sliding Window Roller / Pulley Suppliers

4. Guangdong Runo Hardware Technology Co., Ltd.

Location: Danzao Town, Nanhai District, Foshan, Guangdong | Platform: Diamond Member, Audited (MIC)

Established July 2009, Runo is a Foshan-based manufacturer of high-end aluminum door and window hardware with annual production capacity of 1,000,000 roller sets per year. Its RN-112 surface-mount roller pulley is an aluminum-frame unit rated to 130 kg system load, covering window sashes from 620 mm to 1,800 mm height and 435 mm+ width. 4

Certifications: ISO 9001:2015, CE, SGS
MOQ: 500 pieces
Price range: US$1.90/pc (10,000+) → US$2.90/pc (1,000–9,999) → US$3.20/pc (100–999)
Materials / finishes: Aluminum body; black, silver, white, gold, champagne; anodizing and powder coating available
Load capacity: 130 kg system load per set
OEM/ODM: Full customization for shape, size, color, logo
Direct sourcing: Runo MIC Store

Buyer note: Runo's strong load rating and Foshan manufacturing base suit buyers sourcing heavy-duty casement or tilt-and-turn aluminum window hardware. At $1.90/pc for 10,000+ units, volume pricing is competitive versus regional peers. Not a zinc die-cast specialist — aluminum-body system only.

5. Ganzhou Jinliwang Technology Co., Ltd.

Location: Shangyou Industrial Park, Ganzhou, Jiangxi | Platform: Diamond Member, Audited (MIC)

Operating from Jiangxi's Ganzhou — the same province as JBC Hardware, covered June 9 — Jinliwang (brand: Jin Li Wang / 金骊王五金) produces a broad window and door hardware portfolio: sliding window rollers, door rollers, wardrobe wheels, door hinges, door handles, garage door wheels, friction stays, and furniture ball-bearing hardware. 5

Certifications: SGS-verified; audited supplier
Product range: Aluminum alloy and UPVC window roller pulleys, heavy-duty bifold door hardware, hidden track door rollers, 4-nylon-wheel sliding rollers; price from US$0.20/pc (iron-frame single roller) to US$2.27/pc (adjustable 4-wheel door roller)
MOQ: Inquiry-based; OEM/ODM supported
Export markets: Europe, North America, Southeast Asia, Middle East
Direct sourcing: Jinliwang MIC Store

Buyer note: Ganzhou Jinliwang provides an entry-level to mid-range roller portfolio at price points starting from $0.20/pc for iron-frame designs, making it a practical option for African and Southeast Asian project buyers. The product line complements JBC Hardware's zinc die-cast specialist offering with lighter-duty nylon and aluminum-body variants.

Sliding aluminum window roller hardware — Aluminum surface-mount roller pulley (Runo RN-112, 130 kg capacity) 4

Aluminum Profile Assembly Supplier

6. Jiangsu Haitec Profile Technology Co., Ltd.

Location: Huai'an City, Jiangsu | Platform: Diamond Member since 2021, Audited by BV (Bureau Veritas, ID: MIC-ASR2441229)

One of the few large integrated window-industry enterprises in China, Haitec was founded in March 2001 and has grown into a top-5 profile supplier in Jiangsu province. The facility spans 190,000 m² (120,000 m² built) with 500 staff and 36 production lines across aluminum profiles, UPVC profiles, finished window and door systems, and PVC resin raw materials. Annual capacity exceeds 100,000 tons. 6

Certifications: CE, ISO 9001 (Quality), ISO 14001 (Environment), OHS; Bureau Veritas audited
Product range: 6063/7000-series aluminum profiles; thermal break aluminum profiles; powder-coated, anodized, wood-grain transfer, and electrophoretic-coated profiles; aluminum window and door systems; UPVC profiles; hardware accessories
MOQ: 10 tons
Price range: US$3,100/ton (100+ tons) → US$3,200/ton (50–99 tons) → US$3,300/ton (25–49 tons); 30-year warranty declared
Production capacity: 100,000 tons/year
Lead time: 15–30 workdays for out-of-stock profiles; 5–10 workdays for in-stock
Export: BV-audited trade infrastructure; 80–100% repeat buyer rate
Direct sourcing: Haitec MIC Store

Buyer note: Haitec occupies a distinctly different market position from the Foshan-centric profile suppliers already in this series. Jiangsu province offers logistical advantages for East China and North China buyers and for container loading via Shanghai or Qingdao. At $3,100–3,300/ton with CE/ISO certification and BV audit, the pricing is on par with Foshan mid-tier — and the 190,000 m² footprint signals real capacity depth. The UPVC + aluminum + hardware integration makes it a one-stop procurement option for window-system builders.

Aluminum window profiles stacked at factory — 6063-series aluminum window profiles (Jiangsu Haitec, Huai'an) 6

Quick-Reference Table

#	Supplier	Location	Category	MOQ	Price	Certifications	Platform
1	Nanjing Demeters Rubber & Plastic	Nanjing, Jiangsu	EPDM seal strips	1,000 m	$0.40–5.00/m	ISO 9001/14001, OHSAS 18001, SGS	Diamond MIC 2021
2	Qinghe County Hongli Rubber & Plastic	Qinghe, Hebei	EPDM seal strips	100 m	~$1.50/m	Continuous-vulcanization std.	Diamond MIC 2023, 5.0★
3	Hebei Xianghe Rubber & Plastic	Qinghe, Hebei	EPDM weather seals	500 m	$0.23–0.51/m	ISO 9001:2015/14001/45001	Diamond MIC 2024
4	Guangdong Runo Hardware	Foshan, Guangdong	Sliding window rollers	500 pcs	$1.90–3.20/pc	ISO 9001:2015, CE, SGS	Diamond MIC
5	Ganzhou Jinliwang Technology	Ganzhou, Jiangxi	Sliding window rollers	Inquiry	$0.20–2.27/pc	SGS audited	Diamond MIC
6	Jiangsu Haitec Profile Technology	Huai'an, Jiangsu	Aluminum profiles	10 T	$3,100–3,300/T	CE, ISO 9001/14001, BV audit	Diamond MIC 2021

Sourcing Observations

Regional clustering in Qinghe, Hebei: Three of the top EPDM seal-strip suppliers now in this database — Hebei Guangte, Qinghe Hongli, and Hebei Xianghe — are all based in Qinghe County, Hebei. This cluster (also home to the Qinghe rubber industrial park) enables competitive volume pricing and short lead times for buyers able to consolidate orders from the area.

Jiangsu as an emerging hub: Jiangsu province now contributes two suppliers in this series — Nanjing Demeters (EPDM) and Jiangsu Haitec (profiles). For importers routing via Shanghai or Ningbo, Jiangsu-based manufacturers offer a logistically convenient complement to the dominant Guangdong and Zhejiang clusters.

Corner keys — still a coverage gap: This issue does not add a new corner-key / angle-connector specialist. The category remains the thinnest in the database. Buyers requiring verified zinc die-cast or 6063 aluminum corner keys at sub-$0.50/pc with full certifications should revisit Foshan Xuanqing Zhilian (Jun 5/7) or Keyi Metal (Jun 4), or consider a targeted Alibaba RFQ for this part.