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Tianjin Sijia Technology Co., Ltd.

Tianjin, China
Business Type:
Manufacturer/Factory & Trading Company
Main Products:
Phone waterproof bag , Beach shoes , Swimming ring , swimsuit
Repeat Buyers Choice:
50%~80%
Address:
Xiaowang Yushi Industrial Park, Qiaobei Street, Ninghe District, Tianjin, China
Production Lines:
3
OEM Service Available:
Yes
OEM/ODM Service
Sample Available
Visit My Factory
Secured Trading Service

Phone waterproof bag, Beach shoes, Swimming ring manufacturer / supplier in China, offering Water Shoes for Women Men Beach Shoes Quick-Dry Aqua Shoes Socks Swim Yoga Exercise Wear Sport Accessories Pool Camping Must Haves Adult Youth Size, Barefoot for Beach Swim River Pool Lake Hiking Kayaking Surfing Water Shoes Men Women Adult Quick-Dry Aqua Sock, Women Two Piece Swimsuit Halter Triangle Hollow out Bathing Suits Cheeky String Bikini Sets Beach Cover up and so on.

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Tianjin Sijia Technology Co., Ltd.
Tianjin Sijia Technology Co., Ltd.
Tianjin Sijia Technology Co., Ltd.
Tianjin Sijia Technology Co., Ltd.
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Business Type: Manufacturer/Factory & Trading Company
Main Products: ‪Phone waterproof bag‬ , ‪Beach shoes‬ , ‪Swimming ring‬ , ‪swimsuit‬
Repeat Buyers Choice: 50%~80%
Address: Xiaowang Yushi Industrial Park, Qiaobei Street, Ninghe District, Tianjin, China
Production Lines: 3
OEM Service Available: Yes
CTI Audit Report No. :

Tianjin Sijia Technology Co., Ltd. Was established in 2015 and is located in Tianjin. It specializes in the production and research and development of waterproof phone cases, swimming bucket bags, beach shoes, wading shoes, water shoes, and non-inflatable swimming rings and other water sports equipment. It has successively served central state-owned enterprises in the cultural and tourism industry, as well as chain water parks and hot springs such as Happy Valley Maya Water Park, Huaqiang Fangte, Chimelong in Guangzhou, Atlantis in Hainan, Poseidon in Harbin, and Yinzijia in Zhengzhou. It has long-term strategic cooperation with leading domestic brands such as Li-Ning, Xtep, Peak, Jordan, Hongxing Erke, Little Yellow Duck, Yimei Shan, Sanqi, and Kaidilong, providing better product experience and service. Since 2019, Sijia has entered the international market through a three-stage process of "certification first, then samples, and then bulk production". Currently, export business accounts for 45% of the company's production capacity, with direct customers covering 42 countries and indirect access to over 280 water parks and retail terminals worldwide.

The company has a 3, 000 square meter manufacturing base with an annual production capacity of 6 million waterproof bags, 1.5 million pairs of wading shoes, and 200, 000 non-inflatable swimming rings. It is a high-tech enterprise integrating research and development, design, innovation, and environmental protection. The cooperation forms include OEM, ODM, and OBM. For over 10 years, it has been dedicated to doing one thing - keeping water out of the equipment. With molecular-level technology, it redefines water-friendly equipment, providing an "extreme comfort and safety" experience for every water encounter. It is committed to becoming the leader in water scene protection equipment in China and a new international benchmark.

All raw materials are dual-certified by international SGS and EMTEK for environmental compliance, with 100 % traceability from pellet to product.

Our campus operates intelligent production lines anchored to a self-built, aerospace-grade technology platform:

Frequency-molecular fusion: Phase-locked at 27.12 MHz, delivers full-penetration, zero-weld seams; Waterproof pouches certified to IPX8 immersion.

Nano-crystalline injection: Mold-cavity tolerance held to 0.005 mm for micron-level accuracy.

Quantum-ultrasonic welding: 40 kHz variable frequency, bond strength ≥ 95 % of parent material, zero-adhesive and greener.

One-shot injection molding at 160-170 °C merges upper and outsole into a seamless, stitch-free unit-eliminating traditional de-lamination risk.

Adhesion + seam-sealed tape survives -20 °C flex tests without cracking.

One-piece knitted Flyknit uses 3D bio-mimetic weaving to mirror the foot's anatomy like a second skin while cutting weight by 35 %.

Warp-knitted Jacquard employs 0.8-1.2 mm precision vents to deliver 600-900 mm s¹ airflow (ASTM) for marathon-level breathability, yet retains ≥ 15 N mm¹ lateral support for zero distortion on hard cuts.

Fused into a single system, these black-grade technologies create submarine-grade sealing plus ultra-precision comfort-redefining the waterproof footwear experience.

 

General Information

6 items verified by CTI
Business Type:
Manufacturer/Factory & Trading Company
Main Products:
Phone waterproof bag, Beach shoes, Swimming ring, swimsuit
Year of Establishment:
2015-03-17
Repeat Buyers Choice:
50%~80%
Address:
Xiaowang Yushi Industrial Park, Qiaobei Street, Ninghe District, Tianjin, China
Plant Area:
1400 square meters
Registered Capital:
10,000,000 RMB

Trade Capacity

All information verified by CTI
Main Markets:
Domestic
Number of Foreign Trading Staff:
2
Supply Chain Partners:
7
Minimum Order Quantity:
500 pieces
International Commercial Terms(Incoterms):
FOB
Terms of Payment:
T/T
Average Lead Time:
Peak Season Lead Time: within 15 workdays
Off Season Lead Time: within 15 workdays
Overseas Agent/Branch:
No
Export Year:
1 year
Nearest Port:
Tianjin Port

Production Capacity

All information verified by CTI
Production Lines:
3
Inspection Type for Finished Products:
Random inspection(Visual inspection & Function inspection)
Inspection Method for Finished Products:
Finished product checked by packing staff
QA/QC Inspectors:
2 people
Traceability of Raw Materials:
No

R&D Capacity

All information verified by CTI
OEM Service Available:
Yes
R&D Engineers:
1 people
New Products Launched in Last Year:
Yes
Customization Options:
Customization from Designs, Full Customization, Minor Customization, Flexible customization
Production Machines:
Automatic high-frequency machine, Crusher, Cutting machine, Dao Furnace, Fusion machine, High-frequency machine, Hydraulic punch press, injection molding machine, Mixer, pad printer, Punch press, Roasting machine, sewing machine, Slitting machine, Sole injection molding machine

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