伊人色综合一区二区三区,在线观看的网站,波多野结衣av无码,狠狠色狠狠色综合日日五

ABOUT US

ABOUT US

Shandong Yanxin Environmental Protection Technology Co., Ltd. is located in yongqingsi Industrial Park, Diao Town, Jinan City, Shandong Province. It is close to Jiqing highway, G309 and s321 highway, only 5 kilometers away from Zhangqiu exit of Jiqing highway, with convenient transportation.

The company adheres to the safety and environmental protection concept of "production does not forget safety and development does not harm the environment". At the same time of enterprise construction and development, the company invests in the construction of safety and environmental protection facilities, strives to achieve zero pollution and emission, strives to build an ecological environmental protection enterprise, and actively advocates environmental friendliness and sustainable development. It has obtained ISO9001 quality system, ISO14001 environmental system certification and iso8001 occupational health and safety management system certification.

The company takes "survival based on quality and development based on integrity" as its business philosophy, and ensures advanced technology and reliable product quality through modern enterprise management mode, industry-leading R & D capability and core technology with independent intellectual property rights. At present, the company has obtained 1 invention patent, 4 utility model patents, 2 utility model patents and 2 invention patents under review.

The company takes "customer's demand is the power of continuous innovation" as its development concept, constantly introduces high-end talents with management, R & D and marketing capabilities, and is committed to the refinement of enterprise management. All management work has always been at the advanced level in the same industry. At the same time, the company is actively committed to providing customers with systematic solutions and high-quality product services, and has established an open cooperation mode with partners to create the maximum value for customers. For the convenience of customers, the company has registered the member of Alibaba xinchengtong and passed the field certification of Alibaba.

As Heaven keeps vigor through movement, a gentleman should unremittingly practice self-improvement. Shandong Yanxin Environmental Protection Technology Co., Ltd. is looking forward to sharing with you for a win-win future!

国产无遮挡又爽又黄的视频| 黄网站欧美内射| 国产成人一区二区三区影院| 久久精品国产99国产精2018| v与子敌伦刺激对白播放| 无人在线观看完整免费版视频下载| av无码天堂一区二区三区| 99国产午夜精品一区二区| 日本AⅤ精品一区二区三区日| 男男性行为免费视频播放| 少妇人妻陈艳和黑人教练| 亚洲精品久久久AV无码专区| 天天综合色天天综合色hd| 午夜dj视频观看免费视频国语版| 国产在线无遮挡免费观看| 免费无挡无摭十八禁视频在线观看| 两个人在线观看| 国产成人免费高清直播| 洗澡被公强奷30分钟视频| 久久古典武侠第1页777| 久久亚洲色www成人欧美| 果冻传媒av精品一区| 无码人妻一区二区三区免费| 人妻耻辱中文字幕在线bd| 少妇特黄a一区二区三区| 国产欧美久久久久久精品一区二区| 国产超碰无码最新上传| 国产精品亚洲一区二区三区| 噼里啪啦国语在线播放| 久久精品国产亚洲一区二区 | 暖暖在线观看免费高清完整版| 白色丝袜国产在线视频| 精品综合久久久久久88| 日本三级香港三级人妇99| 免费人成视频在线看片| 欧洲国产伦久久久久久久| gogogo免费高清在线中国 | 国产精品久久久久免费观看| 娇妻在厨房被朋友玩得呻吟 | 少妇人妻偷人精品视蜜桃| 性生大片免费观看性|