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自硬水玻璃砂常温硬化剂一WJ型有机酯系列产品于1992年5月在苏州通过部级鉴定,并在苏州市吴县精细化工二厂正式投产。WJ型有机酯水玻璃砂硬化剂系列化、商品化课题
Self-hardening sodium silicate room temperature hardener a WJ-type organic ester products in May 1992 in Suzhou through the ministerial-level appraisal, and in Suzhou City Wuxian Fine Chemical Plant officially put into operation. WJ organic ester water glass sand hardening agent series, the commercialization of topics