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Ningbo Zhiqing Valve Co., Ltd. |
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Ningbo Zhiqing Import & Export Co.Ltd. |
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Ningbo Zhiqing Electronic Industrial Co.,Ltd. |
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Shanghai Zhiqing Investment Co.,Ltd. |
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NO.1 PRODUCT PATENT CLAIM |
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Patent license of temperature measuring ball valve |
Patent license of gas and liquid bottle valve |
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Patent license of a leakproof and durable ball valve |
Patent license of a valve structure that can directly join aluminum plastic compound pipe |
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Patent license of a leakproof angular check valve |
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