China Aluminum Windows Accessories Suppliers Roundup

Today's digest covers six verified Chinese suppliers across all four priority parts: pile/EPDM weather seal strips, aluminum corner keys, zinc die-cast sliding window rollers, and aluminum profile assemblies. Focus this issue: the world's largest pile strip production base, a Foshan roller specialist founded in 1990, and two distinct profile mills targeting different export markets.

Seal strips

Haining Lijialong Pile Weather Strip Co., Ltd. — Haining, Zhejiang

Lijialong is the self-described world's largest production base for door and window pile weather strips, operating five facilities: four in Haining, Zhejiang, and one in Suez, Egypt.1 Founded in 1999, the company has 800+ employees, 30+ R&D engineers, and a plant area over 100,000 m². It holds 46+ patents and was named a leading unit in drafting China's national industry standard for pile weather strips.

Product range: High-resilience silicone and anti-aging pile strips, "U" base extruded pile strips, screen insect-proof brush strips, triple-seal extruded sealing strips, coated sealing strips, co-extruded door sweeps, and embedded wooden sealing strips.1 Note: the product line is focused on pile/brush-type and coated sealing strips; EPDM rubber seal strips are not listed in the core range.

Certifications: AAMA, REACH, RoHS, UL.1

MOQ and pricing: Alibaba listings show pricing from $0.15–$0.18/meter on embedded silicone pile strips with an MOQ of 20,000 meters.2 The high MOQ reflects volume-manufacturer positioning. The company started exporting to Europe in 2002 and currently serves 4,500+ customers globally across over 20 countries.

Platform: Alibaba (manufacturer + trading company, 21 years); own website at lijialong.com; also exhibitor at IBS 2026 (Builders Show).

Lijialong global factory map showing China plants (Haining) and Egypt facility (Suez), with product range and capacity data — Lijialong's five-facility footprint: four production bases in Haining, Zhejiang and one in Suez, Egypt 1

Corner keys / angle connectors

Foshan Xuanqing Zhilian Technology Co., Ltd. — Foshan, Guangdong

Xuanqing Zhilian is a Foshan-based specialist in aluminum window and door corner joints, listed on aluminium-hardware.com. The product catalog spans 6063-T5 aluminum corner joints across 45°, 90°, and custom-angle variants, including injectable gel types, screw-fixed types, and glue-free designs suitable for Middle East market window profiles.3

Product highlights (with pricing):

Product	Price (USD/pc)	MOQ
6063-T5 Aluminum Corner Joint, 5060 Series	$0.28	500 pcs
6063-T5 Corner Joint for Folding Doors/Windows	$0.28	500 pcs
Door/Window Corner Joint with Two Screws	$0.30	500 pcs
2mm Thick Corner Connector for Window/Door Frame	$0.28	500 pcs
Casement Window Screen Frame Corner Joint	$0.30	500 pcs
Injectable Gel Aluminum Corner Joint	Negotiable	500 pcs
Solid Polished Corner Joint for Middle East Market	Negotiable	500 pcs

Certifications: Not publicly listed on the platform page. OEM/ODM available for custom sizes, alloys, and glue variants.3

Sourcing note: Xuanqing Zhilian's pricing for standard 6063-T5 types ($0.28–$0.30/pc at 500-pc MOQ) is consistent with previous issues' corner key benchmarks. The injectable gel variant and the Middle East-specific polished type add differentiation useful for buyers specifying aluminum partition frames or regional-standard window profiles.

Sliding window rollers / pulleys

Jingsheng Hardware (Guangdong Jingsheng Window & Door Hardware Co., Ltd.) — Foshan, Guangdong

Jingsheng Hardware is a Foshan-based manufacturer founded in 1990, making it one of the older factory-direct suppliers in this space. The company integrates metal die casting, stamping, and injection molding under one roof — a manufacturing breadth that covers zinc die-cast rollers, aluminum alloy handles, friction stays, and glazing packers.4

Product range for window rollers: The core offering includes heavy-duty load-bearing sliding window and door rollers, including heat-insulation break-bridge roller variants.5 The roller products span zinc die-cast and aluminum alloy constructions.

Certifications: ISO 9001:2015, AAMA 904 test reports, CE EN 13126 compliance, RoHS.4 The factory also conducts salt-spray (ASTM B117, 1,000 hours) and cycle-fatigue testing (50,000 cycles per EN 13126), making the product line relevant to European procurement specs. Vacuum die-casting with DFM mold-flow simulation is used to reduce porosity in zinc alloy parts — a relevant process disclosure for buyers who have encountered surface-defect issues from lower-cost suppliers.

Jingsheng Hardware factory certificates: ISO 9001:2015, AAMA 904 test reports, CE EN 13126, and RoHS material analysis — Jingsheng Hardware's certification stack: ISO 9001, AAMA 904, CE EN 13126, RoHS 4

MOQ / Pricing: Sliding window roller assemblies listed at negotiable pricing, MOQ from 3,000 pieces for the heat-insulation break-bridge roller variant; standard rollers at 0 MOQ for inquiry.5 OEM/ODM available.

Export markets: North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, Middle East, East Asia, Western Europe.

Front view of Jingsheng Hardware factory in Foshan, a 10,000 sqm facility founded in 1990 — Jingsheng Hardware factory, Foshan, Guangdong 4

Aluminum profile assemblies

Foshan Xingji Pilot Metal Products Co., Ltd. — Nanhai District, Foshan, Guangdong

Xingji is listed on Made-in-China as a Diamond Member (since 2022) and Audited Supplier with a 5.0/5 review rating.6 Despite the entity's 2023 registration date, the group carries 20+ years of aluminum window production experience. With 226 employees in Nanhai District, the product scope includes aluminum profile extrusion, sliding doors/windows, casement windows, tilt-and-turn windows, pergolas, and sunrooms.

Profile pricing and MOQ:

Product	FOB Price	MOQ
6063-T6 Powder Coated Sliding Door Profile	$3.00–3.40/kg	1 kg (trial)
Powder Coated Extruded Window/Door Profile	$3.30–3.50/ton	1 ton
Industrial-Grade Aluminum Alloy Profile	$3.90/kg	500 kg
Window Frame Profile	$3.90/kg	500 kg
Africa Market 6063-T5 Frame Profile	Contact for quote	20 sqm

Certifications: ISO 9001, CE, AS2047 (Australia Standard), Roto Frank AG partnership, TÜV Rheinland audit (report MIC-ASI251363).7 The Roto Frank AG partnership and AS2047 certification indicate product lines engineered for European-spec fittings and Australian building codes, making this supplier more relevant for buyers serving those markets.

Trade note: The company explicitly markets an Africa Market profile with free mold opening, and has active product listings for Saudi/Arab standard casement and sliding door frame profiles.6

Foshan Shenghai Aluminium — Foshan, Guangdong

Shenghai Aluminium is a Foshan-based extrusion mill offering 6063-T5 and 6061-T6 thermal break profiles, positioning itself explicitly on alloy purity ("we will never use aluminum scrap").8 The factory operates six extrusion lines with a combined 600–3,600-ton press capacity and a monthly output of 1,200 tons.

Thermal break profile specifics: The product uses a reinforced polyamide thermal barrier between inner and outer sashes — the standard approach for energy-code compliance in European and North American buildings. Surface finishes available: mill, powder coat, anodize, electrophoresis, wood grain, polishing. Thickness tolerance: ±0.15mm. Profile length: 5.8m standard, custom available.

MOQ: 500 kg minimum; typical container loads run 10–12 tons for a 20' FCL, 20–23 tons for a 40' HQ.8

Certifications: ISO 9001:2008, ISO 14001:2004, OHSAS 18001, GMC.

Payment and lead time: 30% T/T deposit, balance before delivery; 15 days production, +7–10 days for new mold opening. OEM available; free samples offered.

Contact: sales@shenghai-alu.com; also active on Facebook, YouTube, Instagram, X, and LinkedIn.

Supplier comparison

Supplier	Location	Priority Part	MOQ	Price Range	Key Certifications
Haining Lijialong	Haining, Zhejiang	Pile weather strips	20,000 m	$0.15–0.18/m	AAMA, REACH, RoHS, UL
Foshan Xuanqing Zhilian	Foshan, Guangdong	Corner keys	500 pcs	$0.28–0.30/pc	OEM/ODM; certs not disclosed
Jingsheng Hardware	Foshan, Guangdong	Zinc die-cast rollers	3,000 pcs (break-bridge type)	Negotiable	ISO 9001, CE EN 13126, AAMA 904, RoHS
Foshan Xingji Pilot Metal	Nanhai, Foshan	Aluminum profiles	1 kg (trial) / 500 kg	$3.00–3.90/kg	ISO 9001, CE, AS2047, TÜV
Foshan Shenghai Aluminium	Foshan, Guangdong	Thermal break profiles	500 kg	Inquiry-based	ISO 9001, ISO 14001, OHSAS 18001

Sourcing takeaways for this issue

Three patterns stand out across today's suppliers.

Pile strip volume vs. flexibility: Lijialong's 20,000-meter MOQ positions it firmly for large-scale fabricators or distributors consolidating orders — not a fit for small project runs. Buyers needing 1,000–5,000 meter trial lots will continue to find better access through smaller Alibaba Gold suppliers covered in previous issues (Tongxiang Liansheng, Jiayueda).

Roller supplier differentiation: Jingsheng Hardware's 36 years of operation and EN 13126-tested product range give it a verifiable compliance trail that shorter-history suppliers lack. The vacuum die-casting process and CMM tolerance checks (±0.02mm) matter specifically when rolling load failures or surface delamination have been a quality concern in prior sourcing cycles.

Profile mill positioning: Shenghai and Xingji serve different buyer segments — Shenghai targets energy-code markets (thermal break, 500 kg entry) while Xingji targets volume contract markets in Africa and the Middle East with free mold opening and low-unit pricing. Neither is primarily a component supplier; both are better suited to buyers assembling finished window systems rather than those sourcing bare extrusion for resale.